I won't be updating today but maybe tomorrow. I always uninstall the previous version then install the new version.
OK, do as you like.
If some people are having problems with this new version I'm not going to update yet.
As we have said many times, get yourself a backup and recovery strategy in place and you can try almost anything. If it doesn't work, then it shouldn't be a great problem to roll back to your backup images, etc.
As Bob said, this is a support forum, what would you expect to find here. There must be thousands of different permutations of peoples systems, they may or may not match yours. The only way to find out if it is OK on your system is to try it (having your backup and recovery strategy in place).
I have had a problem that has required me to drop back (clean reinstall) to Avast Free version 18.5.2342. The problem that I have experienced I would guess is more likely to impact those using win XP as I haven't had this issue (high CPU usage by AvastSvc.exe) on my win10 system.