S!
Seems that for some this underclock thing is solved by opening CCC and enabling the overclocking. Then OC just a couple MHz and bam, it works. I used AMD system monitor to see if my clocks work OK and they do.
What I am going to do is to report the "3 blue lines" to the driver feedback as it seems to affect only AMD cards. Performance wise devs would need to take a look in the smokes causing massive slow downs, the dust at landing making a big hit as well and shadows flickering/hit on fps. When the game is "ready" then the rest is up to AMD/nVidia to tweak their drivers to work on the title
