Fixed the major stutter when backpacks are loaded into the game.

The only errors that remain are:
Warning: task_force_radio_items\models\tfr_backpack.p3d:0 Face 4178, point 2912, face points 2912,2944,2945 - very small normal -0,0,-0
Warning: task_force_radio_items\models\tfr_backpack.p3d:0 Face 4181, point 2913, face points 2913,2927,2929 - very small normal -0,0,-0

Solves: https://github.com/michail-nikolaev/task-force-arma-3-radio/issues/503