Linux Review:

Tainted Grail: The Fall of Avalon

Step into a dark reimagination of Arthurian legends in this first person, open world RPG. Explore a world stuck in everlasting autumn, witness falling legends and make meaningful choices woven into a complex, branching storyline.

PROTON TIER: PLATINUM

Tainted Grail: The Fall of Avalon - Linux Technical Documentation

Status Check: Runs well via Proton. Tier: Platinum.

TWEAKS & TRICKS:

Black Screen on Startup: Game starts with a black screen. Solution: System Settings>Display and Monitor>Set Adaptive Sync to off. Launch game. After closing the game, turn Adaptive Sync back on.
Low FPS on Initial Launch: Experience very low FPS (around 10) even in the tutorial. Solution: Modify Manual GPU Clock in game settings from 1600 to a lower number, then revert back after launch.
Terrible Performance & Graphics: Low FPS even on lowest settings. Solution: The game suffers from poor optimization. Using DLSS with DeckyLoader provides minimal performance gains with reduced visual quality.
Mouse Input Issues: Unable to use the mouse to view 360 degrees. Solution: Add launch options to address DE-related input issues. (Specific command not provided, see Gamescope below).
High CPU Crash on CachyOS: Experiencing constant crashes with high core count CPUs. Solution: Use these launch commands for stability. (Specific commands not provided, see below).
GameMode Disabled: Mangohud shows GameMode is off. Solution: Add launch option mangohud_gamemode=1 (or equivalent command to enable GameMode).
Gamescope for High Resolution: Use this Gamescope command for optimal high-resolution display: gamescope -f --force-grab-cursor -w 5120 -h 1440 -W 5120 -H 1440 -- %command%
Performance Fluctuations: FPS tanks significantly after leaving the starting area, then fluctuates. This issue is likely a sign of further optimization issues within the game itself. No specific fix identified beyond the solutions listed above.

Verdict: Tainted Grail: The Fall of Avalon is a solid buy for Linux gamers. While it suffers from some performance and optimization issues, it runs smoothly under Proton and can provide a rewarding experience. Be prepared to experiment with launch options to fine-tune performance to your system. Expect performance inconsistencies, especially in large open areas.