Take a look
The problem is collision, these block use a lot of collision checks could affect the performance, im looking a solution to replace collision to something that don't need to use collision, for example each block distance if is short to another block, it would fall down, otherwise is too close, don't fall.
It shouldn't be less than 20 FPS
The reward is $ 75 USD via Paypal.
This is urgent
PM me for more details.