This issue is not related to bluestack accounts! My tab with 1Ghz Dual Cortex A9, 1GB RAM, Nvidia Tegra 2 running Android 4.0.4 with latest cc dataset shouldn't have problems handling this game. Other games runs just fine, so something must be wrong with your code for Raid Boss.
You can test my account with a similar device i you want and see for yourself. Just contact me and i'll give you my acc details. I can't play myself anyway, also missing millions in stat increase because of this ****!!