Adobe Premier Elements 2022 - Freezes

I upgraded to 2022 eariler this spring.   Had no issues until recently   There have been no hardware changes since the 2022 install.   Dell desktop - i7-9700 CPu 16 GB ram; Win10.   ISSUE - Rendering has slowed down;  reviewing video files will STOP in less than 2 min;  must then hit PLAY button to get it running again; cannot scroll thru video for editing as video is stopped where you left off.    THUS FAR - we have cleared cache; uninstalled and reinstalled 2022; and spend 1 hour on phone with DELL to insure its not a hardware problem.