MusicManager: CPU goes through the roof

[gantsevdenis]

On latest master (and 4.2.7), a simple fact of opening "Options->Music Manager" sends CPU to >90% load, from a steady 30%, while the game is on pause.

Shouldn't be so heavy, it's a static picture

[maxsupermanhd]

Unable to reproduce on 4.2.7.

Try launching the thing with GDB and looking at threads...

uname -a: Linux max-nb 5.13.0-35-generic #40~20.04.1-Ubuntu SMP Mon Mar 7 09:18:32 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux
Shell: Kitty
WM: Xfce 4.14 (from xubuntu repos), Xorg
Built locally from cloned repository using ninja, run from both cmake installation and build directories.
Libraries and packages that provide them: https://pastebin.com/7TrJprhT (generated with https://pastebin.com/PTGWnVaA)

[KJeff01]

Happens on master for me. One core will go up to ~50-60% as long as the in-game music manager is open.

Main menu version does not have this problem.

[KJeff01]

2cf6f2f Should fix this. Now my cores average around 9.5% which is close to pause usage.

[gantsevdenis]

yup, much better indeed