I absolutely agree, Charl - the effects are always troublesome. No wonder with the scenery based effects, these were made for FSX.
The props are perfect in principal. But there is a difference between how they are displayed with various graphic cards - NVidia and AMD is my best guess here. The same prop disk looks perfect on John Young's and many other computers. Not so on mine. We have tried to troubleshoot this big time, but to no avail.
I have never seen that in reality, but I know it happened.
I love how cloudy/hazy weather looks in P3Dv5, while sunny environment is not to my liking.