Hi, i have exactly the same problem, when i start any N64 rom with PJ64 it becomes slower on every second, it begins at 60 fps, then ~40, then ~20, then ~7, then ~1.3567, etc, and CPU consumption is growing at the same time to almost hang my computer, i have sound disabled and all options are defaults, this problem appears on every video plugin i have tried, TR64 and Jabo's (in Jabo i cannot get video output, all screen remains in black, but the slowdown is still there) I cannot use Rice Video plugins because of the "cannot initialize Dx shit" bug. I will try Glide64 to see what happens, but i have not much hope, i have already migrated to 1964, i'm only posting to show there is something on "new" computers that makes PJ64 completely useless :yucky:
My specs:
WinXP sp1
AMD Athlon 2800+
Asus A7N8X (Nforce2)
512 MB DDR400
ATI Radeon 9600 XT 256MB