Thanks for the reply, i"m aware of the main purpose of this box but it's outdated
I tried to explore other options such as emulator or linux etc but no build was found or found to be working to be exactI don't mind an old kernel but apart from the original outdated android and libreelec i couldn't get anything to work on it...
I've had Lakka running on my Core(s) (specifically Lakka-WeTek_Core.arm-2.1.0.img.gz / Lakka-WeTek_Core.arm-2.3.1.img.gz).
Sorry for the late reply, but I was busy over the weekend.
My lockup is definitely related to the Ethernet port. It must not like either the multicast traffic it's receiving or possibly the LLDP it's receiving. It was connected to a Mikrotik CRS125 switch that is broadcasting LLDP on all ports and there is some multicast traffic on there as well.
I've experienced similar network anomalies before, as I have multiple MikroTik devices on my network, including the main router. Although I've only had issues with some IP cameras and DVRs, it wasn't easy to track down the source.
This MXQ has a SPDIF output to my Yamaha receiver to maintain digital connection. I just use one of those standard 1/8" to dual RCA cables and use the left (White) RCA cable for the SPDIF connection to my receiver.
I created a media converter for it so that I could use it with Toslink. 
(S/PDIF 3.5 mm Jack -> RCA -> Toslink)
I mean locate issue in ISA default konfig. My issue is in TV PVR switching channels and this use plugin managed streams over Input stream adaptive, seems default config have issue. Change to manual 1080 and now no crash.
Unfortunately, I can't really comment on that, since it's an add-on, and the last version released for Leia is already outdated.
I also suspect that this bug isn't specifically Amlogic specific, but has existed on all platforms. IDK.
Edit: I found a fairly similar bug on GitHub: https://github.com/xbmc/inputstream.adaptive/issues/1362
