Just recently I have found that some games have a very bad stuttering problem and my TV card just shows a black image or weird graphic blocks, the sound goes ok just the images are effected!

What causes it is the editing of the boot.ini adding the following at the end of the last line "
/3GB /USERVA=2990", I tested the TV card without the added text and works fine, now just to be sure I edited and rebooted the system 4 times with the text in and out, absolutely no doubt. I am going to start a new thread in the Hardware/Software section of Subsim to see it I can find out what these commands do and how to possibly fix.
Edit: http://www.subsim.com/radioroom/showthread.php?t=162357
Seems that some machines cannot use this or problems!!