Mine does exactly that, too. It also pixelates into an unrecognizable image sometimes. Extremely frustrating.
A workaround is to press the Home button next to the touchscreen, and then tap on CarPlay again.
Did you manage to find out about the RAM usage on system startup? Seems it's overloaded and causes stuttering.
See these posts:
1. https://[Banned Site - For Spamming]/threads/2022-honda-civic-sport-bluetooth-issue.762/#post-5730 (banned site is not evil. Weird that it's banned. It's "www civic...
I have the same lag problem about 80% of the time. I emailed Honda corporate about it last week and they called me this morning to discuss it -- said there isn't a software update yet, and have I tried factory resetting it? (Yes; didn't help.) He said try multiple times; sometimes the 5th...