I have time to time reported the error log, the major issues faced after update to Android 10 are:
1. device lags: maximum number of times I could hear my phone ringing before I could see person's name on the screen, usually have to wait 3-5 seconds for the name to appear on screen, same while making call.
Every time I opens an app, it takes a lot of time to open, specially with camera related apps (PhonePe, Paytm, etc.)
2. biometric: the speed and performance of finger print sensor has drastically reduced even after resetting and setting biometric often.
3. full screen apps are not opening in full screen mode.
4. system freezes everytime I try to update apps from play store.