Hello Again Everybody. Sorry about the slowdown on your computer. The problem is not the graphics (they are very low polygon models very optimized).
The problem is the number of collisions been checked at the same frame. There are lot of collision boxes on every stage (especially 2nd), and to check the collision with every enemy, mario, fire, etc... is very slow...
The problem is every object must check the collision with other objects to make the slide collision. This is a problem that has been corrected in patch4, with the multiple objects slide collision...
Ok. Good Luck Everybody! See you soon! (perhaps 20th of April, hehe)