So here’s the deal. I went and purchased an iPhone 12 Pro Max last night. This has nothing to do with the wireless CarPlay problem I’ve been having, but this phone has 5G bandwidth. I don’t know if that had anything to do with it, but I connected the new phone on may way home and wireless CarPlay worked great! No drops at all. Going to test it in again soon, but it worked last night. Prior to this I had a XR iPhone. It had up to date software but CarPlay would disconnect every 5 minutes.