Hope this may be of help. I noticed my default flight begins Selected Weather: 'User-defined', changes to 'Weather Themes' after ASN injects weather, the resulting frame rate is very poor, and GPU utilization is 99%. If I change back to Selected Weather: 'User-defined' using P3Ds /World/Weather menu items anytime after ASN injects weather, then the resulting frame rate is immediately much improved and GPU utilization drops to 35%. ASN's Conditions, Station:, Edit WX, menu items and Load Preset button were used to inject Instrument Conditions.ast weather conditions applied globally during testing.
