I'm running this game on Linux Mint with an "old" GTX 970. At the beginning I had crackling noise in the background, but this was only during the initial launch when the game was "building shaders", after that the sound issue went away. I'm using the GE9-20 with the launch command mentionned above.

The most painful part for me wasn't to get the game working, but to link my Steam account to my PSN account. I was stuck on the screen "Waiting for connection to server" or something like that.

I followed James' advice (see here https://www.protondb.com/app/2322010#hPigt4AZ1c) and it worked fine. All the instructions are in the Reddit post linked by James, but it is a bit technical I have to admit.

I used ChatGPT to decode the Sony URL and extract the client_id and linkToken values, and then it worked like a charm.

Here's a summary of the procedure, but go see the Reddit post for more info :

1. Make sure you already have a PSN account, and log in to it in your default browser
2. Launch GoW and wait for the "Waiting for server authentication" At that time your default browser should have opened (maybe in the background) with a standard Sony PSN page. Do not close GoW, and switch (alt+tab) to your browser.
3. Copy the URL of this page in a text file, then click on the blue Continue button, it'll generate an error in the next page, do not close that tab.
4. In a new tab, open ChatGPT, paste the URL from the text file and ask it to extract the decoded client_id and linkToken values
5. Go back to the Sony page with the error "Parameter 'client_id' is malformed" error, and copy that URL
6. Paste that 2nd URL into your text file. You'll see in that URL the values client_id and redirect_uri are "=null", which is giving the issue.
7. Replace your client_id (YOUR-CLIENT-ID-HERE) and linkToken (YOUR-LINKTOKEN-HERE) values given by ChatGPT in the URL below

https://ca.account.sony.com/api/authz/v3/oauth/authorize?service_entity=urn%3Aservice-entity%3Anp&response_type=code&scope=openid%20id_token:psn.basic_claims%20id_token:is_child%20psn:passiveLink.steam.s2s&&ui=pr&client_id=YOUR-CLIENT-ID-HERE&elements_visibility_upgrade=no_cancel&redirect_uri=https://pss-cloud.net/gs/accounts/v1/ns/shared:handleRegistration?linkToken=YOUR-LINKTOKEN-HERE

8. Copy that reconstructed URL from your text file andpaste it in the address bar of the window with the error message and hit Enter. This should validate the request and link your Steam account with your PSN. Switch back to GoW.