Ages ago there was a thread that suggested Transparency Antialiasing should be off in MSFS - I've had mine off ever since.  I have been plagued by the volcanic ash cumulus clouds that really spoil live weather.  As I just got the Google Map Tool working nice using the new 'Bing Maps (Latest)' server, I had yet another play around with the graphics settings.

I set Render Resolution to 120 to really get the latest Bing Maps looking good.  Flew around for a couple of hours loving the views, but I then encountered some large cumulus that looked ruddy awful.  I decided to turn back on Transparency Antialiasing and set it to 2X Supersampling.  I may be going mad, but the volcanic ash looking clouds were replaced with solid looking clouds.  I did change several settings but I didn't document the changes, but the clouds are looking a hell of a lot better.

Maybe its worth someone else having a go with this setting?

Personally, I have not seen Live clouds look this good since the early days of MSFS.

These clouds would have been a horrible ash cloud before - they are not perfect, but better than I have seen for ages inn MSFS!

Clouds have been looking steadily better for me lately though still certain views are not good.  You're referring to NV Control Panel?  If so, what do you have AA Mode and Setting set to?  I have to think AA Transparency wouldn't work w/o enabling AA in Mode.