@Christoph-Hart Perfect. Thank you very much!
It works now! You can now go back with Cmd+Z and you can also use the track's automation panel.
The only minor issue is that if I load a preset that has macro modulation, then close the plugin window and open the track's automation, it becomes laggy again. But if I open the plugin window again, it's fixed and the parameter disappears from the automation list. Kinda weird, but not so important.