This is my experience with Android Auto.
When I bought my 2019 Bighorn, I tried Android Auto. It didn't work very well. I was using an older phone - Samsung S7 Edge. The phone and UConnect got asking well and worked fine when connected via Bluetooth, but with AA things slowed to a crawl. A new cable didn't help.
My S7 phone died and I went through several old 'spare' phones before I broke down and bought my current phone - Pixel 4a. Android Auto works much better. It is actually, IMHO, better in some ways than UConnect.
I think that the whole screen projection thing is pretty processor and memory intensive. A phone that is a bit old and under spec'd just won't work well.
There are gotchas. With AA, when the phone is connected to the truck, many functions are transferred to the truck screen. Phone operations like placing calls, etc must be fine via voice interaction or the truck screen. Navigation will be transferred to the truck, so if you or a passenger like to scroll maps and use the phones screen for calls while connected to AA, you will be a bit frustrated.
Waze is often a better nav app than Google maps - but not always. Music apps like Pandora and iHeart Radio seem to work well.
I believe that future vehicles will use AA and Apple Car Play in lieu of their own OS - like UConnect. Hyundai and KIA, I believe are already doing this with 2021 models.
One of my pet peeves when moving from vehicle to vehicle is the lack of s consistent interface. Lights, park brake, etc are all in different places and use a slightly different method of operation. For the infotainment systems, at least, using AA and CarPlay, provides this consistent interface.
FWIW, my wife hates Android Auto.
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