[Q] Exclude folders from gallery (nomedia) topic

Hi guys,
Hitting wall with this S5 since .nomedia file for me doesn't work. I have an app installed in internal memory, which has some pictures in it for its operation. Now this pictures show up in gallery which is really annoying as there are about 30folders(gallery lists as albums..)
I tried full reset gallery + media storage apps, restart phone. Gallery opens, clear first and within couple seconds again full of that crap.... Now is there any solution on this? I don't really want to download apps since troubleshooting when they crash is even bigger pain....
:confused: