Can anyone help? I have an N64 which I am using with my laptop and WinTV-PVR-USB2, and is connected through the aerial socket. I get the picture, and the sound fine on the games, but there is a noticeable lag of 2-3secs between the controller and what happens on the screen. This is the same with all my games and all my controllers. I have tried switching between video modes (PAL BGHIDK, PAL N, and SECAM), which doesn't seem to make any difference.
The signal is coming in on 591.312MHz

Any ideas? Thanks.

I had a similair problem. In the end I found it easier to download an N64 emulater and the ROMS for the games I owned. Then I got a USB adapter so I could use my nintendo joypad directly on my PC. Not only is the response time better, but the emulated software means you can boost up the resolution for the games and everything. They actually look better than the originals!

Judging from your spec, it seems you could easily do this - It's just a bit of a mission to hunt the ROMs down.

Sorry I couldn't think of a direct solution to your problem! :-(