Issues on my Pixel 9 pro XL after Android 16 update

Hello, as the title says I'm having issues with my phone after the update to Android 16 , before the update I didn't have any problems at all, I was really happy with my phone... after the update the UI crashes, phone doesn't wake-up neither touching the screen not rising the phone... I need to press the power button so the phone reacts, and sometimes not even this works... so I have to keep it pressed and have to reboot the phone... I'm rebooting the phone 3-4 times per day... Google support told me that it could be issues after update and that I need to wait 2 days so the phone "adapts" to the update and probably issues will be solved themselves... this sounds weird to me... Someone having similar issues after the update?? Thanks!