Any of the applications might crash. Those are following things that might help find the problem:
Event Viewer
in Windows.Custom Events > Administrative Events
find recent .NET Runtime
.FanControl.exe
PerformanceOverlay.exe
PowerControl.exe
SteamController.exe
exception
.
With the DS4 support the Steam Deck Tools support PS Remote Play natively. However, due to some flickering of OSD (via RTSS) it is required to configure RTSS to the exact below settings: