Refinement region gradiant is very abrupt

Hi to all,

I am running a very basic outdoor comfort simulation. However, when I try to perform the CFD with butterfly, the refinement region border of the BBOX becomes very abrupt. I wonder if I am doing something wrong, or if this is how it should be. Could anybody help me to point out where is my mistake or how to fix it? Have you faced this issue before?

Outdoor thermal comfort (487.0 KB)

@TheodorosGalanos @mostapha could you bring some clarity here?