James, never assume that we dummies already know what may be obvious to some.On my first attempt, it looks like you nailed the problem. I just tried flying the Cheyenne 400LS for a couple of hours, and saw no sign of the problem in full screen mode. Every time I went into the window mode, I got the hesitation, but in full screen mode flight and sound was perfectly fluid with no sign of hesitation. I was useing fsmeteo weather, and ATS.I never have been really fond of implementing the full screen option, but it looks like I better get that way if I want to avoid the hesitation bit. It takes a while to get everything set up on my three monitors, but I am sure I will get use to it.I will continue to try your suggestion with different birds under different conditions to be sure, but it looks like you solved my problem.I hope this helps others as well.Thank you so much for your inputRTH>Okay..I am sure this is not it....but, do you have multiple>monitors? If so, are you in full screen mode? Running Dual's>in window mode with create these pauses for some reason. You>have to run in Full screen mode. >>Like I said...I am pretty sure you already knew that, but I>threw it out there just in case.>

Note:Thanks to James Magyar's suggestion above, it looks like the problem is solved.In full screen mode, I got no hesitation in sound or flight at all.Thanks again James:RTH