I have the same experience as RMoli.3, with the difference that whereas previously with 4.20 the screen was eventually changed (after ~30 seconds of the program not responding), with 4.21.1 it simply never happens (at least not in the 10 minutes I wa...

I have this problem as well, with 4.20. It seems the memory is not released at any point, eventually causing the program to use pagefile and slowing to a halt. I have also migrated my project from 4.18. I tried to make a small project from scratch an...