Vitallini

I'm using the 8kx and going to test this. By the way, with the new backlight brightness setting my experience was that with high settings it will introduce ghosting. Might want to experiment with that to see how it affects your situation.

Yea, I didn't word that post very well. I believe I posted the same link as you did earlier in this thread and was referering to that. ASW = oculus, right? What I was trying to communicate was that windows mixed reality for steam has its own reprojection functionality that I assume will be better to use with a windowsmr headset. The guy I replied said he had used steamvr reprojection with his headset.

I believe the windowsmr asw is its own thing from steamvr asw.

Have you tried using wmr asw? https://docs.microsoft.com/en-us/windows/mixed-reality/enthusiast-guide/using-steamvr-with-windows-mixed-reality#enabling-motion-reprojection-for-steamvr-apps It's been a while so I'm not sure if this still stands, but enabling asw always on leads to a much more stable experience. With my Samsung odyssey jumping in and out of asw led to a loss in image quality for some reason. Asw always on did not.

Yes it is. I really want to upgrade though. Regardless of Intel or AMD an motherboard upgrade is needed and as I need motherboard with many usb ports (I'm sim racing as well) and they are quite expensive. Jumping on the am4 socket at its end of its life is...not ideal. Bah!

Thanks for your replies guys. Taz1004: thank you for explaining what is happening in this situation. That sounds to me like a slider that would adjust the size of an transparent object like smoke would be usefull right? Probably not easily doable or else it would probably allready be an option. Motomouse: I've been testing a few more scenarios and now I'm not sure if I'm only cpu bound. In some cases it seemed like it was both. Hard to be tell. I checked the link in your sig and read through your guide on vr settings. I've lowered a few of them and eased up on the steamvr supersampling. I found a compromise that in most cases avoided the red cpu frametime spikes which made it mostly smooth. Very long bursts still was a problem though. Anyways, those tips helped me improve the experience so thanks. About canceling the 5900x. I just want to explain to see if my thinking is correct. You've allready said it wasn't, but hear me out :). From the benchmarks I've seen for this chip used with flight simulator 2020 which I think it is plausible that it will have some bearing on dcs performance. The 1% lows didn't seem to be very different from say a 10700k or 10900k. Look at this thread: https://forums.flightsimulator.com/t/amd-5900x-5950x-performance-in-msfs/315580 Given that my gun smoke issue when I was testing earlier gave a red spike in fpsvr for cpu and decreased fps from 75 to 60-58: I didn't see the difference observed in the benchmarks to be sufficent to help with the problem. I've read horror stories about people upgrading from systems similar to mine to a 10900k and have very little increase. Now with the new settings I think it would make it better, but I figured I'd wait to see some actual DCS results. I can wait and make a better decision as the new cpu's are tested on dcs. A comment on asw and the pimax 8kx. I've tried it and one of the pros with asw in DCS is that you trade cpu capasity for some visual artifacts which isn't a bad trade off if you don't find asw very distracting. Currently the pimax 8kx delivers 75 frames max. That means that asw is used from a baseline of 37.5 fps. Especially when dogfighting it leads to even more ghosting/skipping of ast moving aircraft and visual artifacts, than the standard 45 fps. I also like the always on asw option in windows mr as you can avoid the jerkiness when going in and out of asw which I personaly find very distracting. For dcs I would use the small fov anyways (atleast in demanding missions) so it isn't that much different from the HP reverb g2 as far as fov is concerned. Also not having to deal with issues with the canted screens on the pimax which mess up zoom to a degree is a pluss. If any one considering a new vr headset for DCS spesifically should stumble into this thread, I believe the reverb g2 would be the better option, but wait for reviews.

Hello, Ok, so I've been trying to tune DCS to my liking. My current setup is an rtx 3090, 8700k at 4.9 Ghz, g.skill 2x8 ddr4 at 3500mhz cl15. Pimax 8kx. I can get pretty consistent fps (except when I'm on the run way) at 75 fps when in singleplayer dependent on the scenario of course. I am cpu bound, which is probably not necessary to write :). I believe my fps issues is related to smoke and/or explosions from weapon impacts. Especially long bursts of gun fire or rockets sends me down to 60 fps and it pops back up to 75 fps when the impact smoke has vanished/settled. Its the cpu frame times that are suffering. 1. Are there any mods/settings I can change to lessen the fps hit from these effects? I would like to have some reaction in game, but something that is easier on the cpu? 2. Would increasing the amount of ram help with this in any way? From what I gather, it shouldn't, but I felt the need to ask. 3. I want to increase my ram to 32gb to prepare for MP as that looks like fun . I don't want to mix kits as the one I have was bought years ago so I'm looking at a new 2x16gb set. Anyone have a good suggestion on ram for my motherboard which is a z170 asus hero wifi? In dcs, should I focus on Mhz or latency or both? 4. I had an amd 5900x on order yesterday, but looking at more or less same performance on the 10900k at high resolution it hardly looked worth buying a new motherboard to go with the cpu. So I cancelled it. Good decision? 5. My 8700k sits at 72 celsius at highest load on an AIO cooler, will probably reach higher in summer time. I've not overclocked the cpu further as it is stable (perhaps not stress-test stabel, but not experiencing any crashes). I've been thinking about de-lidding the 8700k, but realisticly would a 100 or 200 mhz overclock further mean that much? Worth the hassle? 6. On my system it seems like the f18 is alot more optimized when it relates to fps than the f16. Which plane with a decent campaign(s) is known to be easier on the cpu? I'm not into ww2 planes and a suggestion for a plane thats also popular/usable in MP would be great. Ok, thats about it. I'm gratefull for any input on this. Regards, Vitallini

In theory you are right. But for me with my system and the pimax 5k+, for some reason leaving the FPS limiter unlimited makes my FPS stay at 58 or so which leaves me in the situation where ASW is very unstable. Also if my FPS jumps slightly over 60 the software deactivates ASW and it "tries" for 120 Hz. Which it won't reach. Result is a jittery mess in and out of ASW. For Windows mixed reality headsets you can force ASW on at all times and I wish we could have that option in pitools as well. Setting FPS limiter to 40 or 60 (could not see any difference between them) stabilize the FPS at 60 and avoids the jitter when breaking out of ASW WHEN fps is higher than 60. It's weird, but it solves my problem.

Hmm there is something funky going on with pitools when ASW is activated it seems. I described it in the other thread where A hamburger wrote his tips. My experience was that with no FPS limit in Nvidia control panel FPS would not be maintained at 60 even though GPU utilization had 30 or so percent headroom. It got alot better with a limit of 60, but still some issues. I'm going to try it at 40 FPS limit. Thank you for the consolidation of the tips!

Well darn, that worked! It not only solved the high fps jumps, but also got it stable at 60 with lower gpu utilization. Thanks bud!

I can't make sense about the current pimax with dcs. When I use ASW I need to put supersampling so high my GPU is at 96-97 utilization to get DCS to "stick" to 60 FPS. At that level of SS it does not leave much headroom. If I lower the SS to have some more headroom my GPU utilization is at 70 percent, but my FPS never stays at 60 FPS. The FPS is dead set on staying just under 60 FPS (around 58 ) so ASW gets deactivated. Or it decides to try to go for 120 Hz without ASW. Of course that ain't happening so I get mostly too little FPS with some optimistic jumps above 60. This in part is because pimax don't allow for choosing ASW always on. Still the main problem is getting DCS to stay at 60 FPS with 70-80 percent GPU utilization.

Yea I think you are right, but hoping it's not the "better" that is needed.

GPU catalyst setting is in pitools (software for pimax headsets). There is no equivalent in Nvidia control panel as far as I can tell.

From what I've seen of other reviews the valve index being the preferred hmd does not come as a surprise. I haven't tried it myself. My own experience with the pimax 5k+ is that it has taken some time to get it right setup and get to grips with tuning pitools/steamvr for performance/visual quality. Now I'm very happy with it for iracing, but getting the needed FPS in dcs means I'm quite a way of the resolution I want. Hoping the 3080 series will provide. One thing I haven't seen being discussed with the 8kx is that max FPS at 75 means that using ASW means that half of that is being used to generate the inserted frames. Using 45 FPS with ASW in dcs on my 5k+ does not cut it in dogfights as you will get ghosting/shimmering of other fast moving planes or your own shadow. There is to much movement between every other frame for the algorithm to make it smooth. I wonder how this will look with half of 75 being used to generate missing frames? In iracing I can run ASW with 120 FPS, which means the algorithm has 60 FPS to generate synthetic frames from. Seems smoother and has less artifacts than ASW at 45 generated up to 90 in my experience. Very anecdotal so take my experience for what it is.

Hello MilesD! Point ctrl looks great. I would very much like a set. Please put me on the list.

Whats the performance impact?