I happened to noticed while testing radial G for a few moments that my computer was having poor performance and that radial g was taking an excessive amount of time to shut down. When I pulled up task manager, I noticed that after radial G quit and nothing was running, it was using up 2 gigs of RAM. This is with Windows 7 OVRService_x64.exe. Restarting the service and it only uses up 2 megs of RAM.
Note that Radial G does not appear to support the oculus driver...