This issue affects both live weather and presets.
The “Few Clouds” Preset was just mentioned as a reproducible test scenario.
It’s the underlying formula of how all the variables of the atmospheric simulation work together that needs adjusting.
Currently there is a big bias towards “heat only” thermals dominating all the thermic activity.
Whereas “cloud thermals” can only be found under huge clouds (both in presets and live weahter).
In real life chances to find a thermal are much higher below cumulus clouds, rather than a “blue hole”.
(Of course this depends on a large amount of factors IRL, but assuming a typical thermal soaring day)
In the sim the opposite is the case.
This is why a large amount of real world glider pilots dismiss MSFS at the moment, and is what we are hoping gets fixed as Jorg Neumann promised in an interview.