I don't understand this. Your PC specs are more than capable of running LFS in VR flawlessly... It could just be that the Index just asks too much. Have you tried it with other games on your PC? Edit: I noticed you said you tried it with AC and it worked fine in 80Hz mode... Hmm...
@Scawen: Just FYI, with worse specs than Drifteris (GTX 1070, Ryzen 5 1600X), I have used the Valve Index with LFS and it ran just fine with a decent number of cars. That wasn't on the current round of test patches though. Edit again: It might have been on the current round of test patches actually...
There are a number of possible reasons that you only get stability at 80Hz. Your super sampling value is too high. Set it to 115% at the very most for best results in LFS. You're right that the LFS physics engine is out of sync with your headset so you will get some noticeable stutter when cornering. The halving of your perceived frame-rate is an effect called asynchronous time-warp (Oculus term), where frames are being interpolated every other frame to try and reduce any effects of cyber sickness.
While your ping is usually high Nova, it's also normally very stable. Problems arise from unstable pings. I've had terrible races with people with relatively low pings because their ping fluctuated a lot.
I recently upgraded to the GT Omega PRO cockpit. I run a rift but you can probably see why I want to get on the Ultra-wide bandwagon (images attached).
This thread came at a good time. I'm also considering getting a 49" monitor because I would like the option to use a monitor setup from time to time, rather than having to use VR, even for casual racing sessions. I do not get on well with traditional multi-monotor setups, so I'm interested in trying an extra-wide. It's a big expense so I'm interested to get opinions from people who have used them. Rony, nacim, how do you get on with yours?
Probably the latter. The car is fairly unrefined but it's good to have a version of the game available with older layout versions, and the ability to use them online from time to time.
Coincidentally, I also fancied trying the old Kyoto in 0.5F2 2 days ago and wasn't able to connect to the master server. I thought the master server had been turned off intentionally, so paid it no mind.