When running Fs9, I have a number of 'plug and play' units attached. I am also using a powered USB hub.

For some reason, about 8 minutes into the flight, the computer will start to slow down, and frame rates will drop off until the computer freezes. And my Goflight MCP will stop working, and sometimes some of the LED's will extinguish(not all of them).

Once I reboot the computer, everything is back to normal.

I don't have the most powerful computer in the world, but if someone could direct me to a possible source ie: video card?