RickSinGA

Fixed;
 
http://forum.avsim.net/topic/434411-system-running-great-started-studdering-all-of-a-sudden/#entry2924232

Well, I am proud to say I have solved the mystery and am sad to say that I appear to be the culprit.
 
First, here is my order of assassinations:
 
1. FSX.CFG renamed and a BU installed no change reinstalled 2. Logitech Gaming Uninstall no change   3. REX4 Direct Restored default FSX Textures and uninstalled no change   4. Riva Tuner Uninstall no change   5. EVGA Precision Uninstall no change   6. FSX Settings reduced all settings no change reactivated 7. Saitek FIP's unplugged no change reactivated 8. DX10Fixer disabled no change reactivated 9. SPAD disabled no change reactivated 10. FSUIPC4 deleted fsuipc4.ini entry [Monitor] Display=2
Monitor0=0,024C,4,0 FIXED DELETED LINE  
When I had the OOM error I researched how to monitor my memory usage while flying and found the FSUIPC4 code to project it onto the screen.
 
Well, that was what started the stuttering as it turned out.  I didn't even think about FSUIPC4 until I started killing stuff and went into the fsuipc4 ini file to kill SPAD and saw that  [Monitor] line and tried to figure out what it was.  It wasn't there when I put the SPAD start line in the ini file.  So I deleted it and noticed that the green shaded area that had the usage numbers in it didn't come up the next time I loaded FSX.  Ahh, and neither did the stutter.  Then it came to me!  TaDah.
 
Smooth as molasses again.
 
Now I have to reinstall my programs again and hope the pagefile thingy fixes the OOM error.  Although I had never had one before, maybe it was just a onetime cliche.
 
Thanks for all of the help and suggestions.
 
Hope this helps someone else in the future.
 
Rick S.