Hi Pawel, You should be able to run 2 channels @ 200kS total (100kS each) since that it the max rate of the card. Your card is a multiplexed card, which means that the max sampling rate (200kS in this case) is divided by the number of channels you are sampling to obtain the max sampling rate per channel. I dont know if you are trying to run 200Ks per channel, but it should have given you an error stating that the sampling rate is not supported. I have done +200kS on slower pcs and laptops, so i dont think the issue is with your CPU speed.
What do you mean when you say overloaded? Does a -10846 software buffer overflow error occur? If so, you may want to consider the amount of RAM you have. Because you are running WinXP if there isnt a decent amount of RAM left over after WinXP has taken its fair chunk of it, your buffer will be working slower due to OS file swaps. My favourite motto: you can never have enough RAM. Hope that helps.
