- Is the program actually running in the background during the stalls. Are only the front panel updates missing, or is the code itself stalling? (for example, if you place an indicator at the iteration counter, does it jump a large amount when activity returns?)
- What is the CPU use during stalling? What is it during typical use?
- How long is the time until the stall occurs (random, fixed amount, etc). How reproducible is it?
- You still have not told us the power settings of the PC. If you set it to "high performance", deos the problem still occur.
- Have you tried updating the video driver?
- What about antivirus and other utility software?
- Have you done a virus scan.
- What does the program actually do. Does it interact with instruments or DAQ hardware? If so, how?