Hello everyone,
I wanted to chime in here because I've also been experiencing regular micro-stuttering in VR since the DCS update on May 30th – despite very powerful hardware:
My system:
Windows 11 Pro
AMD Ryzen 9 5900X (12 cores, 24 threads)
NVIDIA RTX 4090 (latest drivers)
64 GB RAM
MSI B550 Gaming Plus motherboard
Meta Quest 3 via Virtual Desktop (OpenXR Runtime: VirtualDesktopXR)
Symptoms:
In VR (OpenXR Toolkit active), stuttering occurs constantly every few seconds, regardless of GPU load.
FPS according to the overlay (72/80 Hz) are stable, but frame rates drop briefly periodically.
OpenXR Toolkit reports "CPU Bound (Main Thread)" even though CPU load in monitoring tools isn't at its limit.
This behavior only occurred after the update at the end of May. Up – performance was very good before.
Measures taken so far:
FPS limit set via graphics.lua (e.g., maxfps = 80) and NVIDIA driver
NVIDIA driver: "Low Latency = ON", "Maximum Pre-Rendered Frames = 2", V-Sync OFF
Hardware accelerated GPU scheduling: disabled
Gaming Mode: disabled
Core Isolation: disabled
RAM: DDR4-3200, EXPO enabled (BIOS)
Hot Plug in DCS: disabled
Mouse polling limited to 500 Hz
Shader cache cleared in Saved Games
Power profile: Ultimate Performance
Process Lasso tested (Affinity 0-11 set, CPU Priority: High)
Conclusion:
To me, it currently looks like a systemic change in main thread behavior since the May 30th update – the symptoms are independent of the runtime setup (Virtual Desktop or Link), GPU driver, or Windows Tweaks.
Is there already an official statement or planned fix from ED on this?
Best regards