I've had a 4870x2 and got a 7970 atm.
I can say that I've been let down and will get nvidia for my next card
770 came out like a month after I got my 7970 (SAME PRICE) and I borrowed one and got ~10% better perf. in arma 3.
I've never been a part of any team/cult, because tribalism is stupid.
But I can say I've not had a good experience with AMD, but I've had
no experience with nvidia in long term...
You should have a look and recheck all your paths (maybe in TB etc too). Cause from the picture i see some strange things:
Your layers link to: TAG\TAG_Map\TAG_Map\data\
Your maplayer.png is linked to: scripts\TAG\TAG\TAG_Map\TAG_Map\source\
Shouldnt that be the same path especially with the mainfolder-structure?
(Also i dont know why you have your map in the folder "scripts". That should do no harm, but the usual modsetup is something with the TAG as mainfolder and subfolders with your mod-pbos.