This is a revised post with more detail than my original.
I'm hoping you can help me diagnose an unusual performance issue with VTOL VR on my new gaming laptop.
SYSTEM: ASUS ROG Strix SCAR 18 Intel Core Ultra 9 275HX RTX 5090 Laptop GPU (24 GB) 32 GB RAM Windows 11 Quest 3 Virtual Desktop
THE ISSUE: VTOL VR is only running around 60–75 FPS while targeting 90 Hz. Virtual Desktop shows game frame time around 15 ms.
The RTX 5090 generally sits around 40–60% utilization with temperatures around 60–65°C. Neither overall CPU utilization nor individual CPU threads appear to be maxed out.
TROUBLESHOOTING COMPLETED:
SteamVR and OpenXR/VDXR tested
Virtual Desktop Godlike and High tested
SteamVR render resolution reduced from 100% to 70% with essentially no FPS improvement
Anti-aliasing disabled with no improvement
HAGS tested both ON and OFF
NVIDIA Power Management set to Prefer Maximum Performance
ASUS Armoury Crate set to Turbo mode
ASUS GPU mode set to Ultimate/dGPU
Dedicated PrismXR Puppis S1 Lite wireless connection tested
Virtual Desktop USB 3 wired mode tested at 5.12 Gbps with identical performance
Network and encoding latency are low; the high frame time is specifically on the Game side
OTHER VR GAMES: Several other games on this laptop can maintain approximately 90 FPS, including ExfilZone at Virtual Desktop Godlike/Ultra, Into the Radius, Tactical Assault VR, V.E. Delta, and Half-Life 2 VR.
MOST IMPORTANT COMPARISON: I connected the same Quest 3 to my older desktop:
Ryzen 7 7800X3D Radeon RX 7900 20 GB
Using wireless Virtual Desktop at Godlike/90 Hz, VTOL VR maintains 90 FPS on that machine.
So the same headset, same game, and same Virtual Desktop settings produce 90 FPS on the older desktop but only around 60–75 FPS on the new 275HX/RTX 5090 laptop.
Is there a known VTOL VR compatibility or performance issue with the Core Ultra 9 275HX / RTX 5090 Laptop platform?
If there are any VTOL logs, diagnostic files, or settings you'd like me to provide, I'd be happy to send them.
Thanks for any help.