Which version do you mean with "Witson's latest MCU"?
I'm asking because with MTCE_MX_V3.57 I had random reboots (not freezes) on my Android 9 MTCD PX5 Witson head unit (on which I'm using Hal9k Mod 4.2.0 which is based on Witson's Android 9.)
Reverting back to MTCE_MX_V3.45 fixed the reboots again.
So it might depend on the MCU version that you are using. You could try MTCE_MX_V3.60 that @kirkri posted in the post just above mine and preferably also try the latest Android 10 update that he posted. If this doesn't help and if you already have been using MTCE_MX_V3.60, you could try MTCE_MX_V3.45, which I attached to this post. But only try it if everything else fails, since V3.45 has been released along with Android 9 and the versions V3.5+ have been released along with Android 10.
I installed latest rom and mcu than i didnt encounter a single crash. Thanks!