I can confirm this with Qubes OS when Debian is used as the template VM.Chromium (80.0.3987.116-1) which is in testing fixes the issue. Hope it's scheduled to go to stable soon.
- Bug#952547: chromium: freezes for a couple of seconds, abo... Thorsten Glaser
- Bug#952547: chromium: freezes for a couple of seconds... Thorsten Glaser
- Bug#952547: chromium: freezes for a couple of seconds... juodumas
