Compatibility Report

• Name of the game with compatibility issues: Deus Ex: Game of the Year Edition
• Steam AppID of the game: 6910

System Information

• GPU: Nvidia 2070 Super
• Video driver version: nvidia-driver-570-open
• Kernel version: Linux Mint Cinnamon, 6.8.0-100-generic
• Link to full system information report as Gist: https://gist.github.com/SuperiorDonut/d31d3deec28b595229dcedde226d77b7
• Proton version: Experimental, App ID 1493710, Build ID: 21668796

I confirm:

• [Yes] that I haven't found an existing compatibility report for this game.
• [Yes] that I have checked whether there are updates for my system available.

steam-6910.log

Symptoms

Game load times are twice as long as earlier proton experimental versions.

Also currently the case in comparison to the following proton versions: 9.0-4, 8.0-5, Hotfix

As seen in this video: https://www.youtube.com/watch?v=ZbVLD-OCgkU

Reproduction

1. Launch 'Deus Ex: Game of the Year Edition' with compatibility turned on, and select proton experimental
2. Skip the tutorial and intro
3. Load into the game, then quicksave
4. Quickload the game
5. Launch the game again, this time with proton v9.0-4 selected
6. Repeat steps 2-4
7. You will notice that the loading has become slightly shorter

When you use mods for the game, which typically increases system-load (generally via more enemies and so on), these minor differences compound. For instance, a 3 second load on v9.0-4 will become more like a 6 second load on proton experimental, when map loads become longer. In other words, proton experimental is roughly doubling the load times compared to proton v9.0-4 (and the other versions I tested, 8.0-5 and hotfix)