You are the man!
Didn't think of that, but I've changed the particle effects from very high, down to high and issue is no more.
I've done a youtube video which was going to be to show the issue but it's now solved.
Best posts made by stevo181
RE: Need help to resolve bug with dirt dust and shadows
RE: Realism Dispatch Enhanced 3.1.1 on Gta V v1.0.1604.0 Arena War DLC Tutorial
@DoubleHelix thank you for the fix for the attack helicopters, much appreciated
If you could upload your dispatch file with both rde and dov vehicles I don't mind not having the bikes and detective vehicles as I'd prefer it like that