Advanced weather interferes with the jsbsim flight model properties that control turbulence.
No, it doesn't
interfere with these parameters, it
sets these parameters (among others). That's the whole point about having a weather system - to tell the FDM what the wind and turbulence is and to tell the renderer what the visibility etc. are.
If you wrote the code you'll know which ones it's effecting, look for yourself.
I just told you that I'd explain the issue for you as it is very known to me and in fact solved long ago - since you don't know that, I feel somewhat justified in treating you as someone who 'knows nothing' as you so eloquently put it
Thorsten, i would be pleased if you enlighten me.
Happy to - the issue is that a wind vector has a very well defined mathematical meaning - so setting an updraft or a shear or whatever else works pretty much the same in JSBSim and YaSim. However, turbulence-magnitude-norm (which is the turbulence control parameter for both JSBSim and YaSim) has no well-defined meaning, it more or less is 'some parameter' between 0 and 1 which dials how strong turbulence is simulated.
Unfortunately JSBSim and YaSim treat the parameter
very differently - while 1 in YaSim is challenging but very flyable, 1 in JSBSim definitely is not flyable. Add to the mess that some gliders seem to have set a rather funny inertia tensor (which you can see in aerotow, I've done this in real life, and I know how a plane behaves on the tow line, some JSBSim planes behave very different however) - so these planes respond internally consistent and fine in still air, but can't deal with an externa; force like a tow line - or turbulence, they treat it as if it'd be much stronger than it actually is.
Since it'd be vastly unprofessional for the weather system to do a detailed investigation of the FDM before generating weather, the AW GUI has a slider to dial turbulence strength - which you can dial up for YaSim and down for JSBSim, and even further down to virtually no turbulence if you're in one of these funny planes.
So the issue is well known, understood and solved - just some people can't be bothered to simply check the GUI or ask nicely