Hello, Vlad! - (Sorry for the delay)
- I tried to check (once again) my windows XP pack 2 services, and I'm serious, there is absolutely nothing wrong or really important to "disturb" the CPU. Trust me, because I know what every single services do.
So no, I don't have the Windows Update running in background and no screensaver also
- So I tried to check my video card (Geforce 8800 GT) and un-install the drivers. I used also a program called "Driver Cleaner Pro 1.5 by DriverHeaven" to clean really the hidden files, etc. And then install the latest drivers. And set them to "High Performances".
- I used a program called "CCleaner" to clean the register also.
- I used different version of Virtualdub (1.5 to 1.9) and clean all, preferences, keys, DLL files via auxsetup.exe at EVERY installations.
- I have un-installed your plug-in and then, delete manually every folders with regedit to be sure there is nothing like parameters etc. And then, re-installed it again.
- I do a update with my Anti-virus (Avira antivir latest version) with FULL options enable and do a general scan with Heuristic HIGH + AHeAD ( (system, every files, hidden files, keylogers, trojans, virus... Everything!)
- I do also a BIOS update (Motherboard).
- I used a DirectX 9.0c diag (with directx.cpl), every IRQ, E/S and memory. All Status: "OK"
- I used also the famous "HiJackThis" program by Trend Micro.
So as you can see, I do and check everything on my PC. All after that, guess what, Vlad? Nothing change! I have the same problem. After 2 minutes and a couple of secondes, BOOM! FPS goes down again! (With EVERY video codecs and version (clean install) of Virtuadub. I do a screenshot from with your video test called "SampleClip.mpg" with a timewatch, a freeware program called "Vista Clock 1.0 by respectsoft.com". But for a short video like this one, I don't know if it can help
Seriously Vlad, you know what?... I turn really crazy!