It could be an issue with that plug-in if that's the only one that exhibits this behavior. I know that's a fairly old one, and I don't have a copy to test it.bibz1st wrote: Thu Jun 18, 2020 7:17 pm Hi, Ive got 8 instances of the same synth vst in a project but every now and then the synth ui stops responding, the project still plays ok but I cant alter any of the synth controls. Have I accidentally clicked something or is this a known issue? The synth in question is Linplug FreeAlpha 64 bit
Another issue could be low system resources if it happens with more than one plug-in. But without knowing how much RAM and how many processors you have (among other specs), that would be difficult to diagnose.
Steve