Plugins cause Cubase UI to freeze

[damon.mirate]

Hi!
I found an issue with the Minimal Audio Fuse Compressor causing the Cubase UI to lock up when the VST3 is open. I discovered it when using the Modulator function - and mapping it to the Mix slider at the bottom.

Here is a video explaining the issue in relation to the modulator:

https://www.dropbox.com/scl/fi/8j2thr8dc86r3ite9ebbh/Cubase-UI-Lag.mkv?rlkey=h1qmlqkroj4whwlwdf152cmsd&st=wymq07ab&dl=0

However - since I recorded the video, I discovered the UI freezing has nothing to do with the modulator, and everything to do with that plugin being open. As long as it is open and has more than a single band (of the multiband compression) active, the Cubase UI starts to get laggy or comes to a stop.

Side note - The video shows a processor overload, but it is unrelated to this issue. I am using:

• Cubase 14.0.5
• Windows 10 Pro
• 64 GB RAM / Ryzen 5 3.9GHz
• 48000 Sample Rate
• 512 Samples

While writing this, I upped my samples to 1024, and it helps some, but for the UI to get laggy with nothing playing, I suspect the issue is at a fundamental level.

[damon.mirate]

Hi… Me again. After making this post, I did a search for plugin freeze, instead of plugin freeze with modulator (which is what I did when I made my original post). This came up:

GUI Lag and FPS drop when certain plugins are open

Hello there, it happens to me, that the entire Cubase GUI begins to lag and FPS drop substantially, when using 2 specific plugins. Neural DSP Parallax Mastering the Mix Reference The FPS drop during Parallax is so heavy, that the Cubase GUI basically does not react anymore besides the Parallax one, when it is open (feels like 10 fps). As soon as I close it, the issue is completely gone. When using Reference on a heavier project sometimes certain operations do not work, like placing the play…

After reading that, I went back to Minimal Fuse Compressor… there is an option for OpenGL in the settings. Enabled that - and now everything works as expected.