I'm nearing the end of completing my game. The opening room is the menu screen (loads fine), all the options in the menu work fine except for the 'Start' option. On a Mac I get the beach ball and/or glitching graphics for 1-2 seconds then it runs as it should. On an Amazon Fire tablet it just quits. So that leaves me only being able to test further on the Mac. The 'Start' option takes you to 'level 1' where all global variable are initilized for the first time. BUT..... they are also initilized in every subsequent level without glitching. There is also NO glitch when the game restarts and goes back to level 1. So essentially (unless I am missing something) the issue is with the first encounter with the global variables. I read that global are carried between rooms and with game_restart. So my question is....Does the first initilization require more processing/CPU power then subsequent initilizations?