First.... superb software and support, I've purchased every version up to the latest.I have never yet prevented the, sometimes large, pressure setting changes despite setting the smoothing options in FSUIPC (registered) to 1 mb every 3 seconds... even tried 1 mb every 10 seconds.I was flying across the pond yesterday and several times my altitude had an instant change between 120 and 300 feet. Taking the worst case thats a pressure change of 30 mb in an instant!Is it possible to; if standard pressure of 1013 is set then disable any pressure changes, or toggle on/off, if local QNH is standard. The same also goes for visibility smoothing.... that never works either.

Hi,Thanks for the words! The pressure issue when flying across the ponds can be helped by using the Force Constant Route Pressure.Hope this helps,Jimhttp://www.hifisim.com/Active Sky V6 Development TeamActive Sky V6 Proud SupporterHiFi Beta TeamRadar Contact Supporter