Testing Forz Horizon 4 using DEMO on new gaming PC. Using DUalShock4 issues

I’ve seen other posts on this subject, but have yet to find a working solution. I have tried using the Sony receiver by itself, adding DS4Windows (with and without hide) and also tried Input Mapper. Nothing works. Steering is either weird or nonresponsive and throttle does not function correctly. I am trying to decide whether to purchase any FORZA games along with Fanatec wheel and pedals, but these early results and frustrations are not allowing me to move forward. Why so difficult??? How hard would it be to just have PS4 controller native support and allow this controller to be chosen specifically from within the program? I mean come on man … these games have been around forever. … sadly disappointed.