Hi, new to PC and VR, I keep reading a lot of discussion regards core utilisation and associated issues when it comes to performance running MSFS. I have a i9 12900KF, RTX3080ti plus 32GB 3200 Ram. Is the core activity normal? What should I be looking for regarding issues? Using OpenXR 85%, in game 100% with Motion Reprojection on. Thanks
14%, is that with msfs running in vr?
Yes it is, live weather and traffic
Seems low but it is a top of the range cpu so it just looks like it easily copes with msfs.
Do you have frame rate capped or are you running motion reprojection, because your GPU is not running at 100% which would suggest one of these is active?
Your max GPU use is 100%, so you can up your graphics settings, probably.
I have motion reprojection on, but would you say the CPU activity is correct?
Sorry, I now see that you said you had motion reprojection on in your first post. With anything limiting frame rate, it’s hard to tell whether CPU utilisation is where it should be, as both the GPU and CPU get rest time once they hit the cap.
Nonetheless, I’ve seen my i9 10850K utilisation in VR with motion projection off range anywhere from 15%, like you are seeing, with all 20 cores enabled and with a light scenario workload, to up to 75% with HT off (10 cores) in a complex scene in a complex aircraft like the FBW A320.
Neither your GPU or any individual CPU core is maxing out, so as long as you are getting a reasonable frame rate, good clarity and smoothness at your desired settings, then I wouldn’t worry too much about it. For reference, my i9 at 5.2GHz HT off, 32GB 3200 RAM, M.2 SSD and 3080, OXR 80%, MSFS 100%, top half settings ultra, bottom half high generally pulls 25+FPS and I am very happy with that. My GPU is pegged at 100% and my CPU generally hovers between 25 and 75% (but remember that is with HT off, so percentages are double what you see with HT on) and I think that is pretty balanced.
Thank you for this explanation,very helpful, one question… what does HT stand for? Still getting used to all these acronyms 
HT is hyperthreading, which was used on Intel CPUs prior to 12th gen and allows partial parallel processing to occur on a CPU core. Sometimes it can result in better overall performance, but in my experience with MSFS it works better with it off combined with a higher overclock that can be achieved because that extra circuitry is turned off, which in turn drops power and heat.
12th gen Intel is different in that it uses performance and efficiency cores, which I don’t know enough about to compare to HT, but in layman’s terms I believe it is better than HT and hence probably worth leaving on. I’m sure Dr Google can reveal more on 12th gen Intel, but at the very least you are in good stead with this generation!
Brilliant, I’ll leave is stock setup, any thanks.
A quick Dr Google 
search yielded “The P-cores feature hyperthreading, which means each host two threads, while the E-cores are single-threaded”. So it still might be useful to evaluate if turning off hyperthreading is useful.
I have an AMD CPU and hyperthreading off is my preference. I have an 8 core CPU so no issue with # of cores. Note that I measure my performance using CapFrameX. When I turned off hyper threading my 1% lows were significantly improved. My average framerate stayed the same. But since the “lows” got an improvement it eliminated stutters for me.
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