I am using Reaper to provide reverb for my Hauptwerk Theatre Organ. It works fine, but I've noticed that a few minutes after loading Reaper and Hauptwerk the CPU meter in Hauptwerk goes briefly all the way into the red and the audio (if I'm playing) is highly distorted. I don't have the issue if Reaper isn't running, so I am thinking that there is some fairly extensive activity that is disrupting Hauptwerk, perhaps checking for a new version.
Does it do that? If so, is there any way to turn that off?