Running under Wayland reveals bad rendering performance

[michaelgregorius]

System Information

Linux - Wayland

LMMS Version(s)

bda1a9c

Bug Summary

See this comment and the ones following for now: #7453 (comment)

Short story: the Wayland rendering loop reveals performance problems if an application is not able to update its GUI at a rate of 60 Hz. Frames that take longer than 1/60 second to render will be dropped which to the users appears like very laggy updates in the seconds range.

With intelligent data structures and efficient rendering code it should be possible to reach the requested update rate.

This will mostly affect custom widgets like the waveform renderer/view.

Expected Behaviour

Render quickly.

• I have searched all existing issues and confirmed that this is not a duplicate.