Most probably your GPU is the problem, you should really not be using dxlevel 81 unless it's super old. Try verifying integrity of your game files, then go set the launch options to -dxlevel 90, also change the mode to windowed just to see if it works.

Most probably your GPU is the problem, you should really not be using dxlevel 81 unless it's super old. Try verifying integrity of your game files, then go set the launch options to -dxlevel 90, also change the mode to windowed just to see if it works.