PC Performance Fixes – MARVEL Fighting Souls
MARVEL Fighting Souls PC performance fixes and troubleshooting — shader warm-up, anti-cheat errors, stuttering solutions, and Arc System Works launch patch status.
The MARVEL Tōkon: Fighting Souls Open Beta (July 24–26, 2026) exposed PC pain points: lag, rollback inconsistency, frame drops, startup shader compiles, high CPU usage, cross-play friction, Easy Anti-Cheat errors on Steam Deck / Proton, and overlay conflicts. Arc System Works publicly acknowledged the feedback and listed launch-patch priorities covering those systems plus OBS and Discord compatibility.
Use the community workarounds below while you install the day-one patch. They are not official endorsements, but many players stabilized beta sessions with them.
Shader Warm-Up and Display Settings
Enable shader warm-up at launch to pre-compile shaders before entering matches. This reduces mid-fight stuttering caused by runtime shader compilation — one of the most commonly reported PC issues during the Open Beta.
Switch from borderless fullscreen to exclusive fullscreen mode in the graphics settings. Several players reported improved frame pacing and input latency with exclusive fullscreen compared to borderless windowed mode.
Overlay and Recording Software
Disable Steam Game Recording in Steam settings — background recording can cause significant performance overhead in Unreal Engine 5 titles. Also disable the Discord overlay and close other capture software such as OBS or GeForce Experience instant replay before launching the game.
These overlays are a frequent source of stuttering and input lag in fighting games where frame consistency matters. A clean launch environment often resolves issues that appear to be game-related but stem from third-party software conflicts.
Easy Anti-Cheat Error Fix (Steam)
If you encounter a Steam Anti-Cheat error stating no anti-cheat module was found — common on Steam Deck and Linux via Proton — community members report success by deleting the eos_eac_setup folder in the game's Prerequisites directory, then verifying game files through Steam.
Navigate to your Steam library, right-click MARVEL Tōkon: Fighting Souls, select Properties, then Verify Integrity of Game Files after deleting the folder. Arc System Works is investigating permanent fixes for anti-cheat compatibility before launch.
What to Expect at Launch
Arc System Works confirmed launch-focused work on lag, rollback netcode, frame-rate drops, unnecessary startup shader compiles, CPU usage reduction, cross-play stability, and better OBS / Discord compatibility for streamers. Apply the day-one patch before judging PC performance.
PS5 was generally smoother in the Open Beta. If PC issues persist after the patch, check official Arc System Works and PlayStation channels for follow-up notes.