What you are experiencing is worse than I have ever seen. We do have a catch-all bug 1698270 to cover similar issues, but I am not aware of it ever being as bad as you describe.
Maybe this problem is specific to the VAAPI decoding that is common to both totem and mpv... Does the problem go away after running this?;
sudo apt remove mesa-va-drivers
If the problem then continues, how about after also running this?;
Thanks.
What you are experiencing is worse than I have ever seen. We do have a catch-all bug 1698270 to cover similar issues, but I am not aware of it ever being as bad as you describe.
Maybe this problem is specific to the VAAPI decoding that is common to both totem and mpv... Does the problem go away after running this?;
sudo apt remove mesa-va-drivers
If the problem then continues, how about after also running this?;
sudo apt remove i965-va-driver