Lot of CPU usage when idle

[migue11c]

I noticed this happen only once. Whenever it usually runs idle, the cpu usage is not even close as to what it was just now. I am unable to replicate it, this is the only screenshot i have of the CPU usage from btop after killing the process.

I do not use it as a server or anything like that, just a regular player on my computer.

Musikcube itself was running inside tmux but i don't think that should have affected it, because even when playing, the cpu usage is way lower than what was shown.

[Gerodote]

Not sure about your statement.
when just in kitty

when kitty -> tmux :

[migue11c]

it could be just me then, i've been monitoring it for a while now and i haven't had such a jump again