Do any have TFTs
No TFTs and what are the CPUs?
GeForce FX 5200 128MB - Celery 1Ghz, 512MB RAM
GeForce4 MX 4000 64MB - Athlon 1.2Ghz, 1GB RAM
GeForce2 MX 400 64MB - Intel 500Mhz, 384MB RAM
Also did you check if VSync On/Off in the drivers?
I never mess with that, its set to "off or app controlled" on all systems. Maybe you have some common software (virus killers) etc running on all 3 eating system time?
I only run Virus software on my internet machine, the FX 5200. My other two machines are not connected to the net and do not run AV or Firewall software.Sorry to bear bad news and not be any help :c(