deactivation of an vsti from processing

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First let me say lmms is wonderful and almost can do all i want. Missing features are already in the todo list.
But there is one thing i couldnt figure out due to the lack of a complete manual:

If you plug in different vsti, i dont know how they could excluded from processing. If you mute them or take the solo track just the sound is muted but the cpu load doesnt decrease.
Is there a way to do it without unplug the vsti?
You're right - this is indeed a bug. It already should work for VST effects. Please report the bug at the sourceforge bug tracker (https://sourceforge.net/tracker/?group_ ... tid=640434) and I'll have a look at it.
i put it there and afterwards noticed it was posted before by some one else.