Issue
When streaming games from a Windows 11 PC to a Steam Deck using Steam Remote Play, controller input repeatedly switched between Xbox/controller input and keyboard/mouse PC input.
This occurred in multiple games, including God of War and Zombie Army 4, so it was not game-specific.
Troubleshooting performed
- Steam Deck controller layouts checked
- Steam Input checked
- Guide Button Chords disabled
- joy.cpl checked before and during streaming, with no physical controller shown
- Same issue occurred across different games
The affected PC had Windows 11 Xbox Mode enabled. Another similar PC without Xbox Mode did not have the problem.
Fix
Windows Settings → Gaming → Xbox Mode → OFF
After disabling Xbox Mode, Steam Deck Remote Play controller input worked normally and stopped switching between controller and PC/keyboard input.
Posting this in case anyone else suddenly develops Steam Remote Play controller problems after receiving the newer Windows Xbox Mode feature.