I am having random crash issue on 384.19, with factory reset for multiple times and still same thing, then I suspect was my router issue and got RMAed with a new one a week ago. Still having random restart and crashlog 3 days ago.
Seriously I have no clue what went wrong, and I think I should give it a try for official 386.
There is people report for ac86u crashlog issue for 384.19 in merlin forum as well. So I guess it's not just my case?
I had issues with 384.19 too, hence why I went back to stock.