I worked with this problem little bit.
I made a new clean project with only one printf() function in loop along with 1 ms delay between and found I still getting this overflow state. No error masseges however. I was ready to report it to you but after new reflash problem suddenly dissapeared.
Now I wrote my last firmware with a problem again and now it works without any issues also. I really don’t know what was that. I worked much more then 8 hours today and maybe I made some stupid mistakes but also maybe it somehow related to things I have done.
Anyway. Thank you for your time. I’ll report you in case I’ll get clue or additional useful info.