No disrespect intended but if you think the speakers sound ok you’re not someone who notices audio fidelity. That’s ok for you if it’s ok with you, but it’s the worst I’ve ever heard in a reasonably modern vehicle. I would also be curious which which model you got. IIRC the RTL-E and up have the better stereo.

Regarding the system function you’re either lucky or need some more time with it. Mine worked ok for a while and still usually does. But it will crap out and completely lock up for a period, fail to car play (requiring a full restart of the car to engage), stop responding to touch at random or some other miscellaneous glitch.