This game is made on construct 2... and lets say that construct inst that optimized to run a game that big and with EXTREMES amounts of noise and screen effects, that slow down the pc a lot. the game took a long time for me to iniciate too, i first thought that the game wasnt launching but it launched after a LLOOOONGG time.
so yeah, theres kinda no fix for the bad resource manegment of the game, thats on scirra side (the creators of construct 2)