Airspeed Indicator needle is choppy

I've noticed for a while and maybe since I have been on P3Dv4, that the airspeed indicator needle is choppy and not very smooth when crusing.  it will fluctuate in increments of 5-7 knots with no transition between, just instant fluctuations.   It seems I notice it more when there is some turbulence, but it doesn't take much.  I fly only GA aircraft.  I looked at some settings in ASP4 just to make sure something wasn't set ridiculously and I made one adjustment to wind shear where it was set at 100 and the default should have been 50, but the problem persists.  So, can anyone offer a suggestion on things I can try to fix this issue?

Thanks!  Robert

Edited August 2, 20187 yr by SmokeDiddy