

After installing the Ubiconnect launcher via the Steam-desktop, everything ran perfectly fine. Even a few Ubiconnect upgrades were made without any troubles. I was positively surprised given the recent troubles I had with Ubiconnect over the past few years.

Perfect experience once you've jumped through the hoop of getting the Ubisoft Launcher working
40fps cap
Absolutely zero issues with the game using ProtonGE once the Launcher was installed via the desktop.

DXVK_ASYNC=1 %command%
Run from the ubisoft launcher using GE proton latest. Use the command ive listed and cap at 40fps medium/high settings for a wonderful experience throughout. 16:10 support native.

The Ubisoft launcher needs to be run in desktop mode the first time you run the game, but other than that this game is an easy Platinum. Runs at a rock solid 35-40 FPS on High settings.
Ubisoft Connect
Runs without any issue, great experience on Steam Deck, on calibration, 35-40 fps average high settings + HD graphics, 45 - 50 fps high settings - HD graphics. As usual have to loggin to Ubisoft Connect but it is not blocking.
medium / low settings, FSR ultra quality and a 40FPS lock
I got 2 crashes using default Proton. No more crash using Proton Exp.