I believe the reason for this issue is something with the 3D-model and the compatibility with p3d v4. It is just a freeware so there is not much to expect...
Guess I'll just turn the dynamic lighting function off then, it's not really a big problem.
The freeware a320 model that I am using is from Rikoooo, it works fine and the aircraft themselves look fine to me considering its a freeware, even though the VC is a bit strange but it works ;D
LINK TO MODEL: https://www.rikoooo.com/downloads/viewdownload/6/674
The reason why I am not currently using my payware a320 (the aerosoft version) is that I only have the Aerosoft Airbus Bundle for FSX, sadly I don't have the money to upgrade to the "Professional version" or buy the FS Labs at this point... Hopefully, I'll fix that soon ;D
Thanks for the help and support anyways guys, nice that so many of you respond so quickly with good answers or ideas to what is causing the issue🙂
Good day to yall! - Kevin