I'm using Windows Blinds 6.4 under Vista32; and no plans to upgrade Windows Blinds or Windows OS version.  I noticed that the only Windows Blinds processes I can identify... WBVista.exe and VistaSrv.exe are both set to Realtime.  I know its general rule of thumb in most cases to never to set a process at Realtime. 

Having said the above; what kind of an impact would it have on Windows OS if I change the process priority of dwm.exe to Realtime (from the default "High" setting)?  What kind of an impact would it have on the OS if I set it to "Low"?  I'm using transparency with a Windows Aero-like theme.

I use EVR and other directshow/direct3D related tasks to watch Bluray movies (scaled to a window and/or full resolution/full screen) most of the time (with Aero glass in full effect.  Of course, I dont want to introduce instability to a rock solid setup; however, if I can increase performance in one area (even a little bit), without it affecting stability or adversely degrading performance in another Windows component I need, I wouldn't mind.  If it ends up reducing performance for something I dont use that much, I wouldnt mind either. 

I would prefer someone to answer that knows the answer for sure on this; instead of guessing different possibilities like I am now.  I did try the "realtime" setting, but was too nervous to leave dwm.exe at that for too long.  I also tried "Low", but wasn't sure what to expect.  Both didn't cause any immediate instability no my display.