Anyway I found that it is related, at least for infantry, to the U.S. MTP longsleeve uniform.
I did various tests but the bug appears or disappears randomly. I can't find any logic.

With AAF soldiers it doesn't appear.

It's really related to the card. I found graphical glitches even in Minecraft modded with Shaders mod, looking at water, or in Watch Dogs, driving you can see some sort of wooden walls flickering.

Damn it, if only they answered on geforce forums.
I wrote a message to 2 moderators with still no luck.
This drives me mad.

The new Maxwell videocards are availabre on the market now like the new drivers too. Did anyone tested the drivers out?
It's just to see if you guys will be able to better play the game now since I was too angry I bought a 760..

Pretty understandable, but not so right, every user should get its support, especially us with a problem regarding the gpu.
And I believe it's related to the software, ArmA III itself or the gpu's drivers, so a solution wouldn't be so hard to find.
Let's hope we won't be forgotten.

Confirm that the artifacts are present while using my ASUS GTX 750 ti.
I also wrote on the geforce forums thread and wrote to the moderator that once aswered and then nothing...