Hi
It seems that some users have a couple of different issues in this thread. If you have been experiencing recent freezing since the August update, then we are hopefully on the right track: [resolved] Kodi GUI freezing after TV/AVR source change or while using (July Update) - #19 by sam_nazarko.
My advice would be to wait a short amount of time for this fix to get released and see if it also fixes your issue
Sam