Bad UI performance after the latest update

[jimmy999S]

I've noticed VERY bad ui performance lately.
For example, on a project with micro drum sampler and 2 audio tracks, I get something like < 20 fps
on the ui, but cpu usage is very low. And when I switched to openGL mode gpu was at like 4% and cpu was even lower. I'm using the old audio engine and no sandboxing.
Any ideas?

[spoontechnique]

You should specify Mac or PC, and which OS you're working on. Might also be related to your graphics card. Have you updated your graphics drivers recently?