VR smoke, left eye flickering

[bonfor]

I use a couple of tracks to benchmark VR performance, and in my testing using options.graphics.stereo_mode_use_shared_parser = true yields about 7fps gain compared to setting it to false. I've been happily using it in 2.5.6, but since 2.7 was released I noticed that the smoke in the left eye only flickers between white and black. See this video:

https://1drv.ms/v/s!Avs59wC42JnAnSaejTG7e4VlIU3a?e=BXaoDb

Track is attached.

Is this expected? Is there anything that can be done to remove the flickering?

 

Specs are:

win 10, i9-10200x, 64Gb RAM, 1Gb M2 SSD, RTX-2070super, Oculus RiftS

 

fps_tester_CAU_CAS.trk

[Sérvalpilot]

Same here.