High roller problem plz help – SAS: Zombie Assault 4 Review

I just hope that they keep on updating this game and to make the high roller a tad bit better because even when I am lvl 95 I still get tons of low grade crates in the nightmare mode and it irritates me all the time for get only tier 1 or 2 or if I am lucky a 4 tier grade crates and I have high roller on that mission which gives me no reason for getting high roller if their is still only going to be low grade crates. Pls fix this!!!!!!
Review by Rogue_gamer on SAS: Zombie Assault 4.