[DFLW] DFLW on Win7 64 bit?

[Dodoka22]

So, yesterday I installed DFLW on my new laptop for nostalgia purposes.
The main menu comes in without problems, I start a mission, but when it loads in, I can only see the upper half of the screen, and the game lags horribly. I tried launching in compatibility mode, but it didn't work, I also have the latest Nvidia drivers.My computer specs shouldn't be a problem, I can run much newer games without problems.Any idead on how to fix this guys?