Performance issues with Core Graphics

Thanks for the hint and the info.

I cannot reproduce it with your plugins. I can only reproduce the performance problems as soon as there are meters attached that are regularly updated. If I load a VST2 plugin (no silence flag) including meters into Cubase, the bug becomes very obvious.

Here is a video that shows how the plugin UI slows down the whole system including the host playback visualization:

https://pluginalliance-my.sharepoint.com/:v:/g/personal/joscha_rieber_plugin-alliance_com/EaHOjcFSKt9GmSPp0VaxUPIB17WWu0FXbkeAFor_NZAuPA?e=gTlsFE

But it is still possible that you are right and it is something specific for our plugin implementations (BX Editor).