Viewing in V.R. very shaky on Oculus Quest

When viewing the model below on Oculus Quest, everything starts shaking even when i escape from the viewer, the jittering continues in the home, had to restart my Quest, but it did it again when going in the browser and loading my file:
I tried baking the shadows but it didn’t help, I checked another one of my file and the old file worked, finally i tried changing the location and depth of view without success. There is a lag as well, the model really cannot be viewed in V.R. with Oculus at the moment.
I hope you can help me resolve this issue.
All the best,

hi there,
could the high poly count be the issue, 4.1m seems quite high for real time rendering, high enough to crash my browser, hope this helps