Carplaying music from iPhone getting 1 second audio dropouts

Bought a new Jeep (2025 Wrangler Sport S) without the upgraded sound system. I had the sound system aftermarket upgraded with new speakers, amp and subwoofer, but not the head unit. The Jeep has wireless Carplay that I'm fairly new to. I play music from iTunes on my iPhone (12 Pro Max) thru Carplay. In the first minute or two, I get a quick 1 second dropout of the audio, then it does it every 5-8 minutes after. It's driving me insane. It's like a signal drop. If I play the iPhone music thru Bluetooth (or wired USB) to the head without Carplay, it doesn't do it. It doesn't happen running my old iPod thru Bluetooth (or wired USB). I can't tell if this is an iPhone problem, a Jeep Carplay problem or some kind of interference from the new stereo amplifier? I use my iPhone to Airplay to my home stereo and all my networked speakers in my house (and work) and it doesn't do it. I know the simple answer is to just Bluetooth it, but I actually like using the Carplay the best and my OCD is badgering me to figure out what the source of the dropouts is and fix it.

Any suggestions?