Help needed, 7900XTX doing 36FPS on Quest 2 running half power

[Tweety777]

Hi all,

 

About 2 months ago I upgraded my GPU to a 7900XTX hoping that I would be able to play DCS in VR comfortably. Though it certainly got a lot better then when I used my RTX 2060 things didn't improve as much as I would have expected from a powerhouse like the 7900XTX. I know the 7900XTX can benefit from a higher PCIE then my B450's PCIE 3 but up to now it would seem that the USB speed is the most limiting factor. Therefore I just got myself a USB-C card which should be able to run at 10Gbp/s, but the Quest software indicates no more then 380Mbp/s rather then the 2,2Gbp/s straight from the rear Type-C from the motherboard. Just to be clear, I do intend to upgrade pretty much everything but the GPU, using this topic I'm hoping to put my bucks where they count the most and currently I'm completely at a loss as to what I need to do to get better performance out of my GPU.

Lets summarize what I consider to be weak parts of my current rig:

• USB speed last rated at 2,2Gbp/s
• B450 motherboard (I can't seem to figure out what USB speed it can support per port. Currently I have only 1 of 7 ports empty, with 6 flight peripherals all connected to a 3.0 10 port hub and I use a USB headset
• Ryzen 5 5600G CPU, though this usually runs even slower percentage wise then the GPU (most of the time I can see it runs at around 40-ish% compared to the 50-ish% for the GPU)
• Perhaps the DDR4 memory?

Given above specs, what do you guys think could be the problem?

Let's also state the Quest 2 settings, graphics settings in DCS are at about the highest possible, image quality is therefore really good, going lower seemed to have very little effect.

• 5408x2752 (1,5x) resolution
• 72 Hz
• Quest link with original USB cable

Just to be complete below the list of what I intend to upgrade to:

• Ryzen 7 7700 CPU
• Asrock B650E PG Riptide WiFi
• Thermalright Phantom Spirit 120 SE
• Corsair Vengeance 64GB (2x32) 6000MT/s, CAS latency 30, true latency 10,00ns
• I already have 2 2TB NVME GEN4 hard drives which will be reused in the upgraded rig

 

Thanks for any help you can give me.