VST3 Plugins glitchy on Linux

[lilith]

Without Compositor it’s glitchy and unusable. With compositor it only glitches once when opening the VST3.

edit: seems to be related to this:

Bad performance without compositing - Linux

Hi, today I found some strange behaviour for which I don’t have any explanation. I’m using RENOISE on Debian / Stretch with the XFCE desktop. I’m using the debian stock kernel (4.9.0-8-amd64) at the moment. But I observe the same behaviour also with the Real Time kernel. When I disable the compositing in XFCE or don’t use Compton (using both at the same time is not possible) as the compositor I very quickly get xruns and the DSP load is driving roller coaster. Renoise is becoming very slow and…