Clouds keep changing up every 10 minutes or so

Hi,

I am noticing that regardless of what my local range supression settings may be, every 10 to 15 minutes there is a shift in all the clouds; The texture sets used for each cloud layer seem to change up randomly (cirrus layers become cumulous and vice-versa, cumulous become stratus/vice-versa, and the thicknesses of the layers often change as well, causing sudden IFR conditions at altitude with all sorts of cumulous clouds crowding previously clear airspace. Sometimes when it shifts, I'll get puffy cumulous up at FL400 and above.

This happens with use of both live weather and offline weather files.

Something else happens also - no matter what the altitude, the visibility shifts to a lower level for about 2 seconds each time, then back to normal. I figured out that there is also a wind shift that occurs whenever this happens, and for the same duration. They seem to be interconnected. Wind shifts while visibility is lowered, then everything goes back to normal.

I don't use any fancy add-on aircraft. All freeware POSKY Boeings and IDFG Airbusses, etc. I also have all settings in ASE set properly for this not to happen (i.e. Rate Of Change=0; Visibility Graduation ON; etc.)

Plz help.