Stop processing when vst is not being used

[ToybOx]

I think I may have brought this up before but renoise does not remember to stop processing plugins when not being used sometimes.I come across this quite often.When ticked it will behave as normal but if I reopen the file,renoise does not remember the settings,so upon opening the CPU spikes to high levels.Lots of plugins this seems to happen but the two that affects me most personally is,Replika xt and 3d expanse both Vst3.

[untilde]

I experience this with Vital every time I open a project and hit play for the first time. Huge CPU spike regardless if they’re producing sound or not. I’ve reported this in the past and taktik said he’ll look for a fix:

VST CPU performance in Renoise vs Reaper

Thanks for the test @untilde. I’ll fix the initial CPU spike with the VST instruments after loading a song and playing it the very first time. While this is less likely to happen on real songs, it’s still a good and easy thing to fix. Then I’ll check if there’s an obvious problem/bug that causes the crackling at high CPU loads. Other than that, I think the main difference that remains when comparing CPU usage between the two is Reaper’s “Anticipative FX Processing” feature.

Not sure if the cause is the same, but that might be useful to know.