Do you notice a lag anywhere else in WaveLab?
I had an issue where launching WaveLab, the icon would freeze for a moment before launching, and if I tried to load an FX chain preset, WaveLab would freeze for a moment.
It turns out something went wrong with the Mojave security questions and the Finder was showing up and checked (see attachment). I had to use the Mac Terminal to reset my answers to all the security questions and try again and that solved it.
See my attachment of what I mean. Finder should not be checked or visible here. I found this out because I had one Mac that had a problem, and one that didn’t and this was the difference.
That being said, on my main Mac (still on High Sierra) I use an RME HDSPe card and have no issues at all. Everything is fast and great.
On my Mac with Mojave, I don’t have any RME so I can’t speak about that.
