


Lowered graphics and user dekc's FSR to improve battery life.

No tinkering. No issues, no freezes, no crashes.

Experienced crackling once randomly but a restart fixed it

Most settings at high, textures at Max, volumetrics low, locked fps to 40 and game had no issues hitting that during missions
Probably game bug that has nothing to do with proton but audio would occasionally desync during prerendered cutscenes. Sometimes audio wąs crackling after waking the device up.
Probably related to HDR, but right and bottom edge of my screen would show little light artifacts. I could not determine exactly what caused it as it was seemingly random and happened only occasionally
Game fits well on the small screen

FPS capped at 30 The game is battery draining. About 2.5-3 hours of gameplay.
Text is small on the (rare) cards having a longer description.
The further you progress in the story, the more the HUB performance degrades (maybe because you collect a lot of heroes). At the end, they are unstable (25 to 30 FPS). Note that I had capped FPS at 30. However, this only affects the HUB and the fights have no performance issues.

Fair amount of tinkering to get to a enjoyable level but if you can bare,it's a great game
Resolution set at 800p,world detail, post processing & textures set to high. Everything else set to low & anti aliasing set at fast txaa
Keep hz at 45 capped & tdp set for 10
Alot of small text due to cards being able to have added text
Depending on the amount of characters on screen game can occasionally slow down but in my playtime it hasn't been much
Game was crashing when using default settings
One of my favorite games in recent memory on the go! I've played though midnight suns twice doing a quarter of my pc playthough on steam deck & i loved it after I was able to get it running decently getting at least 2-3 hours of battery at the current settings. A sleeper game and looks amazing on the deck

Gamescope settings: Framerate 45fps/90hz
Game settings: 800p, FSR ultra quality, high world detail, med draw distance, epic textures, high effects, med foliage, high post processing, fast TXAA, dof & motion blur off, high number of shadows, medium shadows & fog
! Note: You will get frame drops in the Abbey, but that is true for desktop PCs as well. That area of the game isn't well optimized. You can still get a pretty consistent 45fps and battles will be rock solid.

30FPS limit
Main combat parts is great, but the exploration needs FSR.

Limit FPS to 40. Lower TDP to 10
Runs really well out of the box. It's battery draining but limit the FPS and TDP for better battery.
-dx12
Capped at 45 FPS on Highest Preset & FSR Performance, can experience some dips when walking around the Abby.
-dx12
Set fps to 30
The game holds reasonably steadily to 30fps, with small stutters when things are loading. Not happening while in the hub or combat.
CryoUtilities with recommended settings.
Used ingame fps limiter to limit to 30fps.
J'ai mis les graphismes en faible, ça ne change pas grand chose et ça n'utilise plus le ventilateur.
Runs fine on Linux-based Steam Deck handheld; had no crashes or heavy FPS drops nor issues with savegames shared between Steam Deck and PC.
Used CryoUtilities's Steam Deck toolkit and enabled all settings for best performance
Limited FPS to 30; about 3.5 hours of game play (instead of ~2.5 hours with 40 FPS)
Sometimes the text on the cards is hard to read, especially on more complex cards with longer descriptions.
Makes incredible much fun and runs well with 30 FPS. Enabling CryoUtilities is a bit of work, but worth it in all games and not just this one. It will also run without as per reports, but apparently not as well.
CryoUtilities is required to avoid crashes
Capped at 30 FPS
Your graphic setting does not get saved. You need to change them each time.
Once CryoUtilities been installed and VRAM increased, crashing no longer occurs and the game plays great.
Text is small on the rare card that contains lots of it. Not that bad though, still very playable.
Mouse cursor always appears onscreen with default controls - switch to "Gamepad with Mouse Trackpad" and you can move the cursor offsceen.
Cloud saves are not supported unless you set up the link yourself.
Even with CryoUtilities and VRAM increase, needed to use -d3d11 command to force the game to open with DirectX11, otherwise it crashed on initial load. Without CryoUtilities and VRAM increase, game is essentially unplayable and crashes frequently.
As others have said, CryoUtilities and VRAM increase are essential to playing this game. Once all tinker steps are complete the game runs really well and I've put a lot of time into it on the Deck as a result.

Just do the two easy fixes I mentioned below (Changing Vram to 4gb and run CryoUtilities), those will fix the crashes when you go to sleep.
-d3d11 for launch options
- Increase Steam Deck VRAM to 4GB
- Run CryoUtilities
These two easy fixes will allow the game to run wonderful, without doing these fixes the game will crash when you go to sleep
40hz/40fps limit and FSR on
Played 26 hours on the Steam Deck so far and its been great. Just make sure to do the CryoUtilities and VRam fixes and the game runs wonderful on the Steam Deck. If you don't do those fixes the game will crash everytime you go to sleep, after doing these fixes i didn't have a crash in 20 hours. Set fps/hz to 40 and do the launch Option (-d3d11). Highly suggest playing this game on the Steam Deck with the two fixes mentioned, I don't suggest it though if you don't do the two fixes.
For a while, I found that the game could run on the Steam Deck fine, outside of the known crash at the start of a new in-game day. Now my save files just crash any time I'm in the Abbey. I am unsure what has caused this change in stability. I am not willing to make huge tweaks just to run one game, and having the boot into Desktop to fix the game saves not properly syncing was enough of a hassle.
Ran CryoByte33's performance scripts on my Steam Deck, and increased VRAM to 4GB in the BIOS
Locked frame rate to 30FPS
Some minor artifacts on chracter creation. Specially around the hair.
Some stutter when at the Abbey. Works great for everything else at locked 30FPS.
Highly recommend:
- Increase Steam Deck VRAM on BIOS to 4GB
- Runs Cryobyte's performance scripts
As for in-game settings:
- Lock the game to 30FPS
- Use FidelityFX under Resolution Scaling if you can, at Balanced
- Textures at EPIC
- World Detail, Draw Distance, Effects, Post Processing, and Screen Space Reflection, Number of Shadows at HIGH
- Foliage, Shadows, Volumetric Fog at MEDIUM
- Depth of Field and Motion Blur set to OFF
- Anti-Aliasing at Fast TXAA
some command card text gets a little small
game continuously crashed on going to sleep in the abbey until forcing proton experimental, was able to get past the cutscene afterwards
None
Game runs excellently on Steam Deck with Cryobyte tweaks.
30 FPS Epic/High settings
All settings linked here https://www.reddit.com/r/midnightsuns/comments/zi70ha/post_patch_steam_deck_epic_graphics_settings
As of the latest patch, you'll need to use the VRAM Bios trick and Cryobyte33's swap file trick for a good experience...
Audio cracking and cuts off abruptly in a few spots, minor
As of the game's latest patch, it crashes often during sleep sequences and Hero Ops finishes.
I wrote a positive review on launch, but since the latest patch, the game no longer works easily on the Deck. You "can play it" but it crashes regularly during sleep sequences, hero ops, and just on some load screens. In some cases, you won't be able to launch it without forcing DirectX11.
The combination of the VRAM Bios adjustment and Cryobyte's Swap File Method does manage to stabilize the game seemingly. I've played it about 10 hours after applying both without crashes on High/Medium settings. That being said, while relatively straightforward not everyone will be interested to try it. If you want to play this game on Steam Deck, look up the two techniques first and see if you're comfortable in doing them, because as of this review it is necessary. Hopefully less so with future patches.
You need to have applied mods to the DeckOS and the Bios that while simple, some dont know how to make, install GE and symlink saves
-d3d11
You need to apply Cryoutilities' Swapfile & swappines mod and set vram to 4gb
30fps 60hz
The game moves your save paths around. https://steamcommunity.com/sharedfiles/filedetails/?id=2896702534 Check here, but basically the game can have so many filepaths for your saves and you need to make a symlink to the one the game actually reads to fix saves and cloud sync
You need to be careful with settings in the Abbey and you shouldnt really expect stability above 30fps in that part of the game.
The game likes to crash on end of day cycle, though with fixes, people claim it works now.
Game likes to crash.
It's apparently possible for the game to work if you have the mods made, run it a low settings 30fps, but experiences are contradictory. I was able to play on dx12, all low settings 30fps, native res with GE43, the cryobyte33 changes 4gb vram and pinning the clock speed to 1400, you mileage might vary, reports are contradictory and I did have serious trouble before it strated to work after a patch some claimed makes thing worse. I recommend AVOIDING IT FOR NOW UNLESS YOU REEEEALY NEED IT.
J'ai créer un lien pour le dossier savegame pour faire fonctionner la sauvegarde via steam cloud.
Donc voilà moi il est sur mon SSD le dossier du jeux c'est le # 368260
Le chemin d'accès pour le dossier de sauvegarde c'est :
Home / deck / .steam / compatdata / 368260 / pfx / drive_c / users / steamuser / my documents / my games / marvel's midnights suns.
Et la ce que vous aller devoir faire c'est créer un raccourci du dossier ( SaveGames ) qui va être dans le dossier Saved_Steam_ votre # d'utilisateur steam
A Save_Steam_ sans le # d'utilisateur.
Car le cloud utilise le premier dossier et je ne sait pourquoi mes proton créer un nouveau dossier qui est le 2 ème.
Parfois sur certaines cartes c'est écrit petit.
Petit problème lié au plein écran ou plein écran fenêtré.
Parfois le son est couper on doit juste cliquer sur l'écran bizarrement ca me fait pareille aussi sur mon ordinateur Windows.
Problème avec le SteamCloud décrit précédemment.
Some setup required especially post-patch, but once that's done game plays quite well on the Deck.
-d3d11
Cards with more text can be difficult to read, not too bad though.
Cloud saves are not supported so as other reports have mentioned you need to create the hook-up manually. Works perfectly after that.
Game worked fine pre-patch. After first post-release patch, crashed immediately when loading into an existing save. Forcing the game to use DirectX11 fixed this - also switched to Proton 6.3-8 because users online said this helped with stuttering. Unsure if this is actually required to keep the game running smoothly, but the DirectX11 switch definitely is. Have not had any crashes since setting this up.
Unplayable out of the box especially if you're playing on more than one device. After tinkering, runs at a consistent 30fps or more on Low settings which looks and feels perfectly fine.

Have tried all the settings mentioned above but it won't open, complains about missing launcher patcher exe in desktop mode
Some optimization in the steam deck and stability fixes are needed before I put more time into the game.
Crashes 100% of the time before 'sleep' action in the Abbey. Save beforehand, close the game, reopen, and continue. It'll progress without issue.
Again, stability issues with end of day actions and general oddities in some cutscenes will stop me from progressing this game much further until the developers do a pass on this game.
Some card text can be a bit difficult to read on the Steam Deck's small display but the game is definitely still playable. When played on a larger screen like a monitor or television the text is fine.
Occasional audio cut-outs, maybe once or twice an hour.
Artifacts appeared somewhat infrequently, maybe once or twice in a multi-hour session.
Save games worked fine but cloud sync did not work properly. This is likely because the game, within Proton, creates a "Steam_Save_" directory containing all save data while Steam will only sync the "Steam_Save_[steam_id]" directory. This can be resolved by moving the empty "Steam_Save_[steam_id]" creating a soft-link between to the "Steam_Save_" directory with the expected "Steam_Save_[steam_id]" filename.
With settings at "medium", framerates were generally stable without any major issues.
The game crashed and quit regularly, particularly before/after some cutscenes and reliably when going to sleep on each game night (about 90% of the time).
TL;DR - Save often, expect crashes when going to sleep and before/after cutscenes, but the game is actually good enough to move past these issues.
Although Linux and Steam Deck weren't targeted platforms at day one with this title, 2K/Firaxis didn't do anything to break things. They just didn't spend any time (yet) addressing some pretty brutal bugs.
The main issue is the frequent crash/quit issue. On Deck, this appears in the kernel logs as an oom-killer process kill. Rather than a slow memory leak, it seems like the game or Proton are trying to do a single-shot massive memory allocation that triggers the kernel's oom-killer to kill the process. Thankfully this is a clean crash and doesn't take down the kernel or OS, so the game can just be relauched, usually without issue. Sometimes the game crashes immediately on relaunch but it'll usually launch the next time.
Tried default the default Proton and a few other versions and all operated the same, except for 70-5, which simply refused to launch the game.
The primary game hub is hard on performance but the actual cutscenes and battles are smooth.
The mouse pointer shows to start the game so used the right trackpad as a mouse to move it. It just disappears once you do.
I've had two crashes in about 7 hours of play.
Tried a variety of settings. As noted in the headline, the main game hub is hard on framerate. On high settings, the hub ranges in framerate from 25-35 fps range. On low settings, you get 40+ fps range in the hub but with dips into the 30s. But cutscenes and battles are very smooth. For better fidelity, I opted to go for 40 fps at 40 hrz on high settings and in battles that is solid. But you can get 50-60 fps range on medium settings in battles and a solid 60 fps on low settings if you want to go that route. After seven or so hours of play, the game has crashed on me twice randomly but nothing game breaking and I've heard that crashes exist on all versions of the game. It is a battery hog game though at my current settings as I get just under two hours of battery life. Very playable though with the style of game that it is.
Turned right TP into mouse to tuck the cursor away
locked 30 FPS
Needed to enable right trackpad so the mouse cursor would go away
Seems to be a post cutscene thing.
Graphics settings not persistent. Keep getting dropped back to Low even when I changed to medium
Performance is overall good, with some irritating crashes. I have played handheld and docked (3rd party USB C dock to my big TV)

The game works surprisingly well with default settings I changed my settings to medium, runs at steady faster but crashes every now and then
Game crashes every now and then. Don't know what causes it yet. Seems random after some cutscenes
I haven't figured out what's causing the game to crash. I have tried using different proton versions but they all seem to randomly crash every now and then just before or after cutscenes. Not every cutscene causes a crash though. Most of the game I've been able to play without a problem.
Game may as well be Verified in my view as works as good as any others I have tried if not better. Plus offical Steam Deck support is coming
Via Performance Settings: 30 Framerate limit. TDP: 8 Watts Scale Filter: FSR 3
All key text is readable from menu to the cards. The only exception so far I have found is subtitles, which I have never seen any so small even on PC, and the description of cards special power however that can be enlarged by using the more info tool. Using the magnification shortcut also works well though if is any important text that's to small at any point.
I honestly doubt could tell the difference between a recording from Windows/Xbox and of the Steam Deck everything runs as well as did on my Xbox. I would be amazed if this game isn't a huge success on the Deck in the coming weeks/months

None
All Settings set to Medium Preset except for Post Processing (Low), Anti Aliasing (FXAA), Depth of Field (Off), Motion Blur (Off), and Volumetric Fog (Off). Game runs at 60 FPS consistently. Cutscenes can pull between 9 to 12 Watts. Gameplay can take at least 24 Watts. Definitely recommend limiting the frame rate to attempt longer game sessions.