minimi66

Update: Lowering Clouds setting from Ultra to Standard pretty much eradicated 95% of stuttering. Also lowering the volume of clouds in a mission also had a very positive effect.

Having enabled AVX2 yesterday to stop constant CTD's i have just tried VR for first time and there is moderate stuttering now where there was none before. No changes to working VR settings from before, will test with other aircraft and post results/findings. I seem to recall that disabling AVX2 a while back had helped eradicate massive stuttering i was experiencing in VR about 2-3 months ago. I wonder if this is going to be a trade-off type situation? Hopefully not. Maybe changing a few VR graphic settings will fix it.

Fair point, it has always made me nervous too, but so far so good i've never had an experience like yours in 31 years of owning a PC. Like you i never do it without a damn good reason, thankfully the DCS Strike Eagle is a damn good reason!

To the guys above who might still be suffering from this bug, i fixed it thanks to a couple of posts on another thread about the same issue. Not saying this will definitely fix it for you but try this: Boot into your PC BIOS and do a search for AVX or AVX2 and when/if you find it (depending on age and model of your motherboard) enable it or set to Auto if that option exists. Mine had AVX2 and had options to Enable/Auto/Disable. I set mine to Enabled. Re-boot and you should be golden if your mobo supports AVX/AVX2? I also noticed that my BIOS was one version out of date, so updated it of course! Have had ZERO issues with the Strike Eagle on multiple missions/terrains etc. since. Runs really well. Hope this solves it for you guys too, best of luck. Here's link to the other thread where i found this info:

Indeed I am! Enabled AVX2 in BIOS and the problem was solved instantly. Also noticed that BIOS needed updating as well.

So.... i have just about the most up to date, advanced and powerful CPU available (from Intel) i9-13900K? And i can't run one specific 2023-released DCS Module unless i downgrade to a older/different CPU just for the sake of this one module? Where specifically was the requirement for AVX listed below please? Or was this just mentioned in some post in a random forum thread? Minimum system requirements (LOW graphics settings): OS 64-bit Windows 10; DirectX11; CPU: Intel Core i3 at 2.8 GHz or AMD FX; RAM: 8 GB (16 GB for heavy missions); Free hard disk space: 60 GB; Discrete video card NVIDIA GeForce GTX 760 / AMD R9 280X or better; requires internet activation. Recommended system requirements (HIGH graphics settings): OS 64-bit Windows 10; DirectX11; CPU: Core i5+ at 3+ GHz or AMD FX / Ryzen; RAM: 16 GB (32 GB for heavy missions); Free hard disk space: 120 GB on Solid State Drive (SSD); Discrete video card NVIDIA GeForce GTX 1070 / AMD Radeon RX VEGA 56 with 8GB VRAM or better; Joystick; requires internet activation. Recommended VR systems requirements (VR graphics settings): OS 64-bit Windows 10; DirectX11; CPU: Core i5+ at 3+ GHz or AMD FX / Ryzen; RAM: 16 GB (32 GB for heavy missions); Free hard disk space: 120 GB on Solid State Drive (SSD); Discrete video card NVIDIA GeForce GTX 1080 / AMD Radeon RX VEGA 64 or better; Joystick; requires internet activation.

I've been away all weekend guys, will start seriously trying to figure this out from tomorrow evening after work. Please let me know if any of you find a possible fix? Thanks v much.

Hi, I don't use Windows Defender, i use Zone Alarm Extreme Security. Tried disabling that, still crashes. Also just purchased Steam version of the module and exactly the same problem, CTD's at the Spawn Objects stage of any/every mission i try on the module. All other modules working. This is the first module i have ever owned in DCS World that has not worked from installation? I have 95% of the modules and all terrains. Also tried running offline as well but same problem. Deleted fxo and metashaders2 for both ED and Steam versions, same result. Crashes every time. So, for the outlay of around £110 i have..... nothing really! dcs.log Is it possible to get refunds from ED?

Also done Clean Up and Repair and still crashes to desktop EVERY single time!! WTF?? Remind me how long we waited for this.....

Just installed the Strike Eagle and it CTD's on every mission i've tried so far? Round about 50% through mission loading screen every time (Spawn Objects stage) Same error message "DCS Crashed, allow DXDiag to collect info" etc. Or no error at all, just CTD. Latest Display Driver installed this morning, still crashes. All other modules working fine, updated DCS OB last night prior to Strike Eagle d/l and install. Have uninstalled Strike Eagle and re-installed 3 times so far, still no luck. Same problem. Tried on MT and ST and on different maps, missions. Same result. Any ideas folks? Not tried VR yet. Windows 11 i9-13900K not o/c'd. water cooled 64 GB Corsair Vengeance 3600 RAM Asus TUF Gaming B660 WiFI D4 Motherboard Zotac GeForce RTX 4090 12GB not o/c'd Log files attached below. DxDiag.txt dcs.log dcs.log-20230623-050256.zip

Yeah its playable with the kind of settings i originally expected!!!

Max Oculus Rendering Resolution and 90 Hz Refresh Rate. These were on MT executable, results on ST were ok but not quite as good. Pretty close though. Yeah definitely agree and not at all really specific to flight sims really. He makes no mention of sims of any sort. For all i know i simply needed to do a fresh install and switch to Windows 11 and that made the difference? Now all i have to do is not f**k it up again!!

90 Hz Oculus refresh rate no negative effects.

That might be tough i think given the rather drastic and all-encompassing nature of my actions. Trust me though i am watching like a hawk now for anything that i do/change or install that seems to negatively affect performance. I just tried free-flight mission in Marianas map and it was a lot worse than Caucasus but not really surprised by that as i understand that map is very demanding and dare i say it not terribly well optimised yet? Its ok at medium altitude but lots of stuttering at low level. I never play it tbh so its not an issue for me at the moment. I will keep this thread going an add updates as i crank up the various settings etc.

OMFG!!! You absolute beauty you!!! It not only fixed it but its purring like a kitten! ZERO stuttering at settings below in F/A-18C in Caucasus Weapon Practice Quickstart mission, 600 KTS at treetop level over all terrain types and all altitudes. Followed all steps other than the over-clocking ones which hopefully i won't need now and it worked first time on clean Windows 11 (as opposed to W10 previously) with fresh install of Oculus Client and factory reset of Quest Pro headset. No ODT/OTT or OpenXR Toolkit. Started with default Oculus client Refresh Rate and Rendering Resolution and moderate to high in-game settings. FPS in-game was absolutely rock solid at 72 Hz, the most flat and constant frame rate i've ever seen in the games Frame Counter. Non-VR on MT exec was 100-120 FPS with everything maxed in-game. WipeUout i owe you (and FR33THY) ten beers each!! Thanks so much for the tip and link. It took me about 2-3 hours to go through the whole video/process. Literally DCS OB, Oculus and my web browser are the only software on the system right now so i will have to closely monitor what happens when more apps are added. Next step is to try 90 Hz Refresh and creep the Rendering Res up with the same in-game settings and see what happens. Hopefully i'll be able to gradually crank up in-game settings along the way as well? Happy Camper here!!!

Thanks for all the above guys, i really appreciate your contributions to trying to fix this. I did try and upgrade to Windows 11 a couple of nights ago but when i ran Windows Update to upgrade it downloaded the Windows 11 files but then said it was unable to install them at this time?? So that option also seems closed for now as well. I have tried to get my head around Process Lasso but i really don't know what i'm doing with it. I was able to set whichever DCS executable i was trying as High Priority no problem but i don't really understand the Affinity setting and what i would need to set? The bizarre thing is that when my new PC arrived about 2 weeks ago and i first installed DCS and ran it with the Quest Pro it ran like a dream. I have no idea what changed and what started this horrendous stuttering. Maybe another piece of software i installed? I may have to just restore my PC with the recovery media that came with it and start from there? Now for the rant! As i said in my original post i bought this PC first and foremost to play DCS in VR with the best settings/experience possible. I am frankly shocked and disappointed that even with my new hardware and current DCS MT technology (albeit nascent) that this is not currently possible. The PC was pre-built by Scan Computers, one of the largest and most popular Gaming PC companies in the UK. Total outlay for PC and Quest Pro and a new Asus ROG 43 inch gaming monitor was over £5000. Every other PC game i have FPS, RTS etc runs perfect on max settings without any tweaking whatsoever. Not so with even the latest Stable version of DCS World? Does this say something about my hardware or about DCS World as a software product. I've been flight-simming on PC since 1992 (Microprose F-15E Strike Eagle 2) and yeah of course i have had to do a TON of tweaking and fiddling in all those years but i guess you just hope that maybe one day you'll get a Flight-sim title you enjoy that doesn't require a Degree in Computer Science to configure and run to a satisfactory degree. This thread should serve as a warning to all DCS fans who are considering expensive hardware upgrades? Think carefully before you click on that buy now button! Not saying you shouldn't buy DCS or try it but maybe not have such high hopes for improved performance with newer hardware. I'm sure the DCS Defence League will now come down on my ass like Shock and Awe but to be honest bring it on! I'm pissed off! Again though, i'm truly humbled and grateful to all the above who have tried to help me fix this issue and hopefully will continue to do so. Thanks guys, you're Legends! Peace! HAGS is currently on and working from what i can tell mate. Thanks for those tips though will try later after work.

Every single non-essential background process also disabled with zero effect on stuttering.

Hi mate, If only it was so simple! I tried the above both with and without my OTT Profile for DCS MT executable but the ground stuttering is no better and even worse at times. I don't really understand how i can input the per eye resolution you suggest as the OpenXR Toolkit settings don't correspond to my oculus client rendering resolution or any multiple of it? The frame times and thus FPS are literally all over the place! If you have any other suggestions i'd love to hear? I'm probably doing something wrong or one of the 10,000 settings needed to run DCS well is 1 notch off what it should be? I probably need to do another 6-7 weeks of testing? My settings are above somewhere if you want to have a look and let me know? Thanks again for the advice and your time. Much appreciated.

Been there done that on several occasions! Don't know whether you've done this already but after uninstalling Oculus Software you need to also go to into your Windows User folder and in the AppData folder delete any and all Oculus folders. This clears any trace of leftover settings from your system prior to re-installing the client. I've had to do this about 10 times in the last year! It will then allow a completely clean install of the client software. Hope you're good to go anyway.

So the stuttering is ever so slightly intermittent! About 2 seconds without and 4 seconds with?

Thanks mate but already set it at both Normal and High and neither made any difference.

Ok, but nothing above has fixed it yet?

So you think Windows 11 is a better choice then mate? I can upgrade i guess and see? I've seen a lot of posts over the years saying W11 has issues with DCS? Hence why i avoided it.

See non-VR performance below all settings maxed out. Sorry, how do i select CPU Affinity in ProcessLasso? Thanks. Tried right-clicking but no option to set as High etc?

SimAppPro WinWing software uninstalled and i understand how to fix tat issue if it returns, which it will if i use the software in future. SimAppPro creates an entry in Export.lue that causes the spiking. Uninstalling didn't fix the stuttering. Here is Process Lasso info on my CPU.