Do you use 2 of c270 or 2 of c525 at the same time?
*The problem first manifested itself when I used one c270 and one c525.
Switching to two c270s does not change the problem for better or for worse.*
when it is problem only 1 c270 is connected and nothing else?
*I have not tried using only one c270 for more than a few minutes. I can
Do you use it on a laptop so the power saving can do some tricks?
*I am using a laptop, but have set it to always be on and never go to
Do you have another computer to test on?
*Yes. I could try another computer if there are no other obvious reasons
for one camera to freeze when none of the others do.*