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Sudden performance issues in Dirt Rally VR

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Oculus Rift, i7-5820k, GTX1080, 32GB DDR4-3000, Windows 10

I've been playing Dirt Rally since it became available, and in VR since that became available, with pretty much zero issues.

After not playing for two days, I am suddenly getting weird "hitching" every few seconds. I've observed this on multiple tracks, different conditions. I'm pretty sure I am noticing it in the main menu as well.

Monitoring resources, CPU usage isn't exceeding 40%. GPU Usage seems to fluctuate from 30% to 60%, but my GPU's boost clock doesn't kick in full. Temperatures are all good, and my overclock settings are the same as they've been for the last year+. Framerates seem to be rapidly fluctuating between 90FPS and ASW's 45FPS. I have also tried using Oculus Tray Tool to force Always-on ASW, which doesn't seem to have an impact using the WMI or Timer injection methods.

I've tried the ultralow and automatic graphics presets with no change in behavior. My usual graphics settings had been working perfectly for a few years now.

The only change that had been made to my system between everything being fine and this problem showing up was updating my nvidia drivers from 418.91 to 419.17. Used DDU to remove my drivers, reinstalled 418.91, rebooted, and the problem persists.

There doesn't seem to have been an update to Dirt Rally.

I'm sure folks are pretty jazzed about DR2.0 and likely playing that, but I can't race without VR anymore. Any help/ideas/similar experiences would be greatly appreciated.

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Try going to your documents folder and then games, dirt rally, and delete the hardware settings folder. 

The game will create a new one automatically when it starts. You may have to re-assign controllers and do your graphics settings again. 

I've had this problem before and this solved it. Also disable ASW in the oculus debug.

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On 3/2/2019 at 4:17 PM, Romkslrqusz said:

Oculus Rift, i7-5820k, GTX1080, 32GB DDR4-3000, Windows 10

I've been playing Dirt Rally since it became available, and in VR since that became available, with pretty much zero issues.

After not playing for two days, I am suddenly getting weird "hitching" every few seconds. I've observed this on multiple tracks, different conditions. I'm pretty sure I am noticing it in the main menu as well.

Monitoring resources, CPU usage isn't exceeding 40%. GPU Usage seems to fluctuate from 30% to 60%, but my GPU's boost clock doesn't kick in full. Temperatures are all good, and my overclock settings are the same as they've been for the last year+. Framerates seem to be rapidly fluctuating between 90FPS and ASW's 45FPS. I have also tried using Oculus Tray Tool to force Always-on ASW, which doesn't seem to have an impact using the WMI or Timer injection methods.

I've tried the ultralow and automatic graphics presets with no change in behavior. My usual graphics settings had been working perfectly for a few years now.

The only change that had been made to my system between everything being fine and this problem showing up was updating my nvidia drivers from 418.91 to 419.17. Used DDU to remove my drivers, reinstalled 418.91, rebooted, and the problem persists.

There doesn't seem to have been an update to Dirt Rally.

I'm sure folks are pretty jazzed about DR2.0 and likely playing that, but I can't race without VR anymore. Any help/ideas/similar experiences would be greatly appreciated.

Any luck?

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On 3/2/2019 at 9:13 PM, Rigle said:

Try going to your documents folder and then games, dirt rally, and delete the hardware settings folder. 

The game will create a new one automatically when it starts. You may have to re-assign controllers and do your graphics settings again. 

I've had this problem before and this solved it. Also disable ASW in the oculus debug.

Sorry for late response, I forgot about this thread and had mostly been on reddit.

Deleting the XML settings didn't help me out.

I was continuing to fiddle around the other night - one user reported being able to force ASW, whereas I could not.

It hadn't occurred to me to disable ASW outright. I did so through Oculus Tray Tool using the timer injection method set to 10 - that actually solved the problem. Interestingly, I've got a lot mroe wiggle room for higher settings without frame drops afterwards too!

Thanks

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Oh good glad you got it figured out. If you're on a 1080 or higher I think you can disable it for just about any game. I've found when its on I get weird frame drops. And it's smooth with it off. I have no idea what timer injection is though haha.

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5 hours ago, Rigle said:

Oh good glad you got it figured out. If you're on a 1080 or higher I think you can disable it for just about any game. I've found when its on I get weird frame drops. And it's smooth with it off. I have no idea what timer injection is though haha.

Seems I spoke too soon. Everything was fine saturday morning, but when I got home from work the issue was there again. Even forcing ASW to 45FPS lock, it dips and I get hitching. I'm at a complete loss with the inconsistency of this problem.

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Posted (edited)
2 hours ago, Romkslrqusz said:

Seems I spoke too soon. Everything was fine saturday morning, but when I got home from work the issue was there again. Even forcing ASW to 45FPS lock, it dips and I get hitching. I'm at a complete loss with the inconsistency of this problem.

And you tried deleting the hardware setting config file in your documents? Thats fixes the problem for most. Nvidia drivers are up to date? Ram is all working correctly?

A while back I had a bad vr stutter when using any nvidia driver newer than 388.xx if i recall correctly. Unfortunately the only fix I found for it was to basically format my computer and do a fresh install of everything. It sucks becuse it can take days to download and reconfigure everything but sometimes its needed to get rid of lingering software you no longer need but is causing issuse with new software. But I had this problem in all vr games not just dirt. You can probably just get away with uninstalling dirt rally and your oculus software and do a fresh install of both. 

Edited by Rigle

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13 hours ago, Rigle said:

And you tried deleting the hardware setting config file in your documents? Thats fixes the problem for most. Nvidia drivers are up to date? Ram is all working correctly?

A while back I had a bad vr stutter when using any nvidia driver newer than 388.xx if i recall correctly. Unfortunately the only fix I found for it was to basically format my computer and do a fresh install of everything. It sucks becuse it can take days to download and reconfigure everything but sometimes its needed to get rid of lingering software you no longer need but is causing issuse with new software. But I had this problem in all vr games not just dirt. You can probably just get away with uninstalling dirt rally and your oculus software and do a fresh install of both. 

Yeah, deleting it had no impact.

I haven't had any BSODs or quirky behaviors in anything else - my RAM settings are hand-tuned, though I suppose I could run memtest/realbench for a long time to reverify - that's just a lot of downtime without my computer available for other tasks.

The problem is isolated to Dirt Rally - every other game, pancake or VR, works fine. I haven't tried the 419.35 driver that just came out, but I was on 419.17 when things worked fine (temporarily) on Saturday. Clean installs of the driver I had in place for over a month did not resolve the issue.

I've also run verification of DR's files via steam and found nothing of concern.

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2 hours ago, Romkslrqusz said:

Yeah, deleting it had no impact.

I haven't had any BSODs or quirky behaviors in anything else - my RAM settings are hand-tuned, though I suppose I could run memtest/realbench for a long time to reverify - that's just a lot of downtime without my computer available for other tasks.

The problem is isolated to Dirt Rally - every other game, pancake or VR, works fine. I haven't tried the 419.35 driver that just came out, but I was on 419.17 when things worked fine (temporarily) on Saturday. Clean installs of the driver I had in place for over a month did not resolve the issue.

I've also run verification of DR's files via steam and found nothing of concern.

It's probably not the nvidia drivers if its not affecting every game like it did for me. If it was me i think i would still try a fresh install of dirt rally and oculus software just to rule them out. 

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I eventually got to troubleshooting by eliminating USB peripherals. In doing so, I found that the USB Cable for my breakout box/HMD had been swapped around with the one for the USB hub in my monitor - that port is on a controller with a bunch of other USB3.0 peripherals and seems to have created a bandwidth issue that was only evident in Dirt Rally.

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Posted (edited)

Yea its weird how usb's can mess things up. I just recently built my pc and used a motherboard with 9 usb's and then added 2 more usb cards with 4 ports each because I didn't want to run usb hubs for that reason. But even this setup gave me some issues where my wheel and oculus rift weren't working right if I plugged them into the motherboard. They worked fine in the usb cards though.

Edited by Rigle

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