(Are you already using RT hardware? Depending on your requirements, you might need to switch to LabVIEW RT.)
It is difficult to tell without seeing your code. What else is going on in the other loops? Anything communicating with devices?
First of all, don't rely on the "quality" of a blinking LED. The UI runs in it's own thread and FP updates might get skipped if cpu is tight. Use a timer and a shift register and measure the actual loop rate.
What kind of loop rate do you need in the high priority loop?
What is happening in the less important other loops? Make sure each of the other loops contains a wait statement. What is the CPU usage during the run?
It would really help if you could attach a small sample VI that demonstrates your point. Thanks!
Message Edited by altenbach on 03-03-2005 07:07 PM