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Judder with CV1 Euro Truck Simulator 2 & American Truck Simulator??

K-STIG
Explorer
Hello community,
So I have a PC with 980Ti and OC'd FX-8350 which had no issues what so ever running both American Truck Simulator and Euro Truck Simulator 2 on a 2d screen. This was at max settings too. Flawless framerates.
When I went through Steam and selected the "experimental 1.3 oculus support" and had the launch as "-oculus", the game ran on my CV1 Rift, but the game is absolutely unplayable with terrible judder and latency issues. Seems to be low framerate, but I couldn't tell as when I ran fraps to check framerate the numbers just kept stacking and made a mess on my monitor. I couldn't read the frame rates. This happens whatever graphics setting I put it to. Even bare minimum won't get it running right. Everything is choppy and when I move my head left to right I notice "black screens" as if the game hasn't loaded yet and is still catching on to render on my rift.

I have no clue how to fix this and I have already tried re-installing drivers and such (also did that due to other issues on my rift sigh*), but I'm running out of clues to what could be causing this. Help would be very very appreciated.

Thank you!!
15 REPLIES 15

edmg
Trustee
It's definitely unplayably juddery in towns on my 970 with my Vive, but I'd expect a 980Ti to handle it OK. My system handles it OK out on the highway, so it's either the extra graphics or CPU load that's hurting it in the towns.

K-STIG
Explorer
The most strange part is, at one point I changed the resolution to 1440 x 900 @ 75Hz (That's the max I can set it to I'm guessing that's due to my real life monitor) and at that point everything worked flawlessly on American Truck Simulator. However, as soon as I tried to take off with my truck my truck fell into the void traveling 400mph downwards lol So I rebooted the game and I'm back to the judder. Tried messing with the resolution settings again in hopes to replicate a cure, but no dice. 😞

HeadRusch1
Protege
Question: Doesn't Euro Truck Simulator have "mature" VR support with CV1 but American Truck Simulator is beta?  Just trying to square that away.....

edmg
Trustee
Pretty sure they both require installing the Beta branch in Steam?

K-STIG
Explorer
They both have experimental oculus support (1.3.0) - 1.22 on Steam

PathlessNomad
Explorer
Hi,

I just reinstalled ETS2 when I heard that 1.3 was working. I noticed the same thing. ATW was doing its thing, so there was no real jutter with head movement, but the games framerate was a mess. I had a look at the graphics options and noticed that it had default to 4x oversampling. I put it back down to 1 and everything got a lot smoother. I sadly didn't have time do do a lot of playing around to get it super smooth, but that one change made a lot of difference. That's on a 970.


K-STIG
Explorer
Do you mean the scaling? The option you can select to 100%, 200%, etc? Mine is default set to 100%. And this occurs with bare minimum graphics so I don't think it's performance related. On my previous comment I mentioned ATS worked fine at some point for reasons I don't know why it decided to work randomly lol, but yeah I'm sure that was somewhere around medium graphics settings. No stutter then.

PathlessNomad
Explorer
Sorry, didn't read your initial post close enough. Yeah, I meant the scaling. Funny that mine defaulted to 400%.

spectredx
Honored Guest
I'm having the exact same issue. It does not seem to be related to graphics settings. 970 here. Maybe it's got something to do with the monitor refresh rates?