We're having an issue with Pro Tools 12 and our AAX plug-ins. When the plug-in GUIs are open PT12's own GUI becomes really sluggish (for example the timecode update begins to stutter). This seems to happen when the plug-in GUI is requiring a refresh; if the plug-in needs to be continually refreshed (because they have meters, for example) then the Pro Tools GUI is always sluggish, until the plug-in is hidden.
Pro Tools 10 is fine, so this seems to be a 64-bit, Yosemite, PT12 issue...
I have tried several different approaches in the code but cannot find a solution.
Any ideas? Anyone else seeing this behaviour?