Error Algodoo is running extremely slow!

[DarkStyl3R]

I installed Algodoo for a long time again and i get the Message:

"Error
Algodoo is running extremely slow! Algodoo is an advanced
software that uses the whole potential of your computer.
Please upgrade your graphics drivers, as that will probably
fix the problem."

I have an Intel Core i5 2500k CPU and a AMD Radeon 7870 2gb GPU and had no issues before.
I have the newest graphics driver installed and dont know what to do next.
My second PC has a AMD radeon 5570 (much slower gpu) and have no issues.

I would appreciate a solution about that.