hi
the maximum is 200.
to help with your problem the more refresh rate the less your cpu and internet works,so if you are betting before in-play, set the refresh rate to 10 seconds or more, because the prices change slow, if in-play you do need to set it to .30 for speed and bet placement.
if you set the threads to 200, your computer will use what is required.
it is the refresh rate that is more important.
mcbee