Morety, let it run though twice. The first time though Ut is loading into Ram thats why the jerks, sometimes your most accurate reading will be the second time though.
It could be your refresh rate on your monitor, right click on the desktop display propeties, settings ,advanced , adapter, you should see refresh rates something like adapter default, optimal,60HZ,??hz,??hz showing what your monitor is capable of...If you know what your monitor is capable of you can set it to that. Sometimes it is a trial and error sort of thing.
ONE WORD OF ADVICE SOMETIMES CHANGING THE REFRESH RATE TO SOMETHING YOUR MONITOR CAN`T HANDLE WILL RESULT IN PERMENENT DAMAGE. SO IF THIS IS SOMETHING YOU`VE NEVER PLAYED WITH LEAVE IT ALONE....
What vid card do you have? Could be some tweeks I can help you with there...
He Shoots..He Scores..He gets shot in the back.
new ingame name VaShooter{PuF}