[SOLVED] MMAL crashes the OS on RPi 3B+

[Exnor]

I'm posting this from mobile so sorry for any mistakes or bad formatting.

So finally got my PI 3B+ two days ago, installed the latest image available (from the download section, that i assume is a stable release) and it started perfectly... I made ZERO changes in the config for the exception of configuring the WiFi and adding my local NAS, and when i tried to play a movie puff the unit got a black screen and no longer responded to SSH requests or the attached keyboard.

So long story short I've tried a lot of things but in the end it was MMAL hardware acceleration being on by default that was causing the crashes... I've turned it off and OMX ON and now it works perfectly.... Even added add-ons now.
Except that isn't MMAL hardware acceleration supposed to work?

Any ideas? I've run stress tests, multiple PSUs with 3 Amps, tested for undervoltage, etc, etc and i cant find any indication of what is wrong.

I can upload logs latter if needed, just tell me witch ones.

Thank you.