[SirBunker]

Originally Posted by Silent Steel

Well, let's try to sort this out.
Here at the forum there are no obvious solutions or silly questions. We're here to help each other. BTW, by far the best community of any kind I've ever been a member of.
Next time it could be you helping me out.

I recognize this problem. For me it turned out to be because both CPU and GPU are too quick. Sounds weird but it's a fact in my (and many others') case.
This makes your system all the time struggling to produce as many GPS/sec as possible. But as there are certain things in the game slowing down this struggle that gives a side effect which is this GPS jumping up and down.
The best thing to do simply is to tell the CPU to calm down and put a max limit to the GPS:s.

First - download this and try it;
http://www.kegetys.net/dl.php/d3d_antilag101.zip

It gives you the option to limit the number of fps rendered ahead.
Just follow the instructions in the readme.txt, very simple.

I use these settings
RenderAheadLimit=3
FPSlimit=36

Works just fine for me and gives a smoooth picture.
If this doesn't solve your problem just get back here and we'll go on looking for the solution.

D3D antilag is included in Patch 2 and I installed, but while troubleshooting I only tried values 0, 1 and 2 for the RenderAheadLimit (neither had any noticable effect). Anyhow, once I get back home on Monday I'll play around with the config file again and will post results here.

Once more - Welcome to SubSim.

Thank you. I've actually lurked around the forums for a while now to see how the mods progress. Indeed an awesome community!