Getting different results on different computers

BlitzPlus Forums/BlitzPlus Programming/Getting different results on different computers

I'm getting frustrated with this problem. I would like to pin point the the problem so I can find a work around solution. Otherwise I will have to rethink my whole network game.

I doubt its going to be the random generator. My map is generated randomly and appears identical on any computer.
Unless the the random number changes after a few thousand numbers or something.

I do use lots of floating point sins a cos, collision detection and so on. Shouldn't the floating point be the same on all computers?

why do tanks take a different path on different computers. The tanks should do as they are told not have a mind of their own.

I did discover one interesting thing.
*** changing the graphics mode also changes the result.
example
Graphics 800,600,2
Graphics 800,600,1
wont give the same tank path.