I got this ZT Systems machine about 4 months ago, it's been absolutely fantastic. The system has an ASUS M3A78-CM Motherboard with an AMD 945 processor 3.0 Mghz, 8 Gigs of DDR2 memory and an NVidia 9800GT graphics card with Windows 7 Home. The system is great, runs very fast, very stable. System has never given me any problems.
Until now, whenever the memory usage gets around 2.5 Gigs the system gets sluggish, a delay between opening a folder, clicking a link, or doing whatever. It just bogs down. The delay is more than annoying; it waits around 1 full second after the click to do the action, maybe longer. Windows see’s 8 Gigs of Ram. I can open Task Manager and shut down a few applications and it goes back to screaming fast. Runs great a 2.0 Gigs of Ram but when it gets to 2.5 Gigs of Memory utilization it slows down again just like a flipped a switch.
I don’t have any clue what would cause this issue.