... it is depending very hard to the modell you want to print. Someone is only able to show you critical points such as a hollow sphere and a massiv filled sphere. This you can transfere to every body with a dome-like shape.
I want to create some exaples for you this evening (now 10:00 am) but the best would be, you attache your factory-file here.
You know the new S3D material advices here: https://forum.simplify3d.com/viewtopic.php?f=8&t=9300
So as the printing is depending from the model, the cooling is also depending from the air-mouth and the kind of fan.
e.g. a radial fan is much stronger than an axial fan and if your air-mouth is like an air-gun the airstream will be pointed to much and blows holes into the hot materials. Also the direction of the airstream is important, if it touchs the nozzle to directly, the nozzle will be cooled down and get closed.
In one case it may be ok with 100% cooling, in a different case it is pure poison.
Actually I run a PETG print with 190°C and 10% cooling but the objects are flat, infill 30% without any problems.
The attached pic shows 2 of 4 parts.