Oh my, oh my... I feel like it's Christmas -
I pretty much solved my problem :elefant:
I just tried running 12 instances of LFS - FPS was crap with that many, sure, but regarding the responsiveness of the computer (which was by far the most annoying and biggest issue), it felt like it was 90+% responsive.
I just marshaled the 8h IGTC race last Saturday (before I fixed the problem). Chatting on IRC on the side was painful with just 1 instance running - 2 felt like.. well, doesn't matter - just go watch my Youtube video and imagine having to chat with that kind of updates. Jikes!
Although I haven't been looking hard lately, I found it to be difficult to Google the issue - but I finally found something - so here it is - and I found it when I wasn't looking for it :hypnotize
http://forums.nvidia.com/index ... iew=findpost&p=570733 (post #2. I can't seem to link directly to it).
Who would ever had though that?? Really? Now that I know exactly what the problem is, I also know that I actually saw the first symptom some 1-2 years ago, when I bought a new mouse. It lags badly whenever I render. So bad that I eventually made a .bat file to always start the 3D app with lowest priority - because if not, then once the render had started, I often had to wait for it to complete before being able to do anything with the PC - but the mouse lag is complete gone too. I just rendered 8.000.000 polys and PC was like.. gimme more. I need polys nom nom!
I've had major sound stuttering issues too (which actually were what I was trying to look for when I found that threat - I had completely given up on solving the "LFS issue"). I had them first time when I installed Vista some 10 months ago. then on Win 7 TC.. a little tiny bit on CP 64 - none at all on XP 32 and I just installed Win 7 final tonight.. stutter as hell, which made be go look for a solution again again.. but sound stuttering is completely gone now after the fix (LFS behaved as before too on Win 7 - so it's not a Win 7 thing!).
3 seemingly different issues, but they are all caused by the same thing.. and yaya "now I can see how they connect". So great to be hind sighted
...imma go dance now :monkey:
Oh btw - that app thingy you can test with - before solving the issue: Bars were about halfway up to yellow or even red occasionally. In idle mode. Holding down F5 on desktop = constant red bars.
After the fix: barely come up half way up to yellow line - with F5 or whatever. Epic win!
Edit: an important note - in the guide it's mentioned to set the PCI Frequency to more or less than 100. I fixed my issue by setting it to 90 - more than 100 didn't work for me.
I ended up reinstalling all my OS's onto seperate drives (not partitions on same drive) today, I'm still restoring stuff now 
) then if you are viewing temp_mpr in another LFS window the temp_mpr file will be overwritten, so when you exit the replay in that LFS, you have lost the replay forever! So, taking a copy of temp_mpr is highly recommended before you start opening it in another LFS! 