Question Quest2 - Very low frame rate with URP (but 72fps with Legacy Render)

Hello, I did some VR projects with Oculus Integration in the past, with the Legacy Render, and I never experienced any frame rate issue.
Now I'm trying the URP, but it's quite weird because the same very simple Oculus example scene is running at 72fps with the Legacy Render, but around 30fps with URP.

I dind't change any of the default settings for both scene, except that:

- For the Legacy Render I'm using the "Medium" Quality settings, with 4x AA
- For the URP I'm using the "URP-Balanced" pipeline, with 4x MSAA

It's the 1st time that I use URP, so I guess I'm doing something wrong somewhere, but I really don't know what I could change the get the same frame rate.
I attach here the screenshots of my settings, for the Legacy and the URP.
Any help would be much appreciated...
Many thanks!

Legacy:


URP

 

I've checked the "URP-Balanced-Renderer" asset, and I've seen that "Post-Processing" and "Screen Space Ambient Occlusion" were enabled. I've turned both off, and now I have 72fps with URP too