New updates didn't support VFX

When I updated my Oculus quest 2 version to the newest one. I found my project become very laggy when I directly test it in Quest.

I am very sure I didn't face it in the old version and I didn't make any changes in my project. My project use some VFX particle systems. I am not sure whether the lag is caused by VFX or the new updates.

Thanks for any reply or help.