High CPU Mixer usage in Unreal 5.7

FMOD Studio
1

Hello, I’ve recently noticed that CPU Mixer started to give me quite high percentages when profiling, we hit around 25% in peak a few months ago during standard gameplay and now we’re around 90% in average with much less running instances.
I set up a test in an empty level - with 50 running instances, where majority is virtualized the average CPU Mixer total and self is around 2,5% where before it was much lower with Total average around 0.5% and self 0.01%. We switched to Unreal 5.7 recently, are there any known issues with performance running FMOD on Unreal 5.7?

Performance in Unreal 5.7 with 49 instances (46 virtualized):

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image629×196 8.78 KB

Performance in Unreal 5.6 with 50 instances (48 virtualized):

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image519×194 7.29 KB

2

We aren’t aware of anything that would be causing this.

The numbers shown in the FMOD Studio Profiler are the CPU time the mixer/update thread is taking. The percentage represents how long it takes, in relation to the amount of time it has to complete a mix. https://www.fmod.com/docs/2.03/studio/profiling.html#reading-a-recorded-session

What version of the FMOD Integration are you using?