I’ve managed to work out a fix myself for several of the problems introduced by 1.5.4 so I am really only posting to inform others, as I know from reading the bug and performance feedback sections that I am not alone, but Fatshark doesn’t actually care to accept responsibility for their changes breaking things.
Completely removing Xbox Gaming overlay and disabling MS Overlay capture system from Windows 11 allows me to use overlays in Darktide without crashing again.
Get-AppxPackage Microsoft.XboxGamingOverlay | Remove-AppxPackage
reg add HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\GameDVR /f /t REG_DWORD /v "AppCaptureEnabled" /d 0
reg add HKEY_CURRENT_USER\System\GameConfigStore /f /t REG_DWORD /v "GameDVR_Enabled" /d 0
Longest I managed to use an overlay since 1.5.4 was less than one match, sometimes I wouldn’t even get into the match.
After doing the above it’s not crashed in 8hrs of playtime with Steam, Rivatuner and LumiaHUD all active and doing their thing.
Doing this also slightly improved the frame timing issues, but I am going to make another post on that as it takes a bit more to fix and I am still making sure the fix I worked out has no superfluous steps or dangerous instructions.