Here is the fix for Black Props.
Add these commands to game launch options:
-force_vendor_id 0x10DE -force_device_id 0x1180 -dxlevel 95
Remove “-dxlevel 95” after you close the game or your settings will reset every time you run the game.
Here’s how to add commands to the launch options
Right-click on the game title under the Library in Steam and select Properties.
Under the General tab click the Set launch options … button.
Enter the launch options you wish to apply (be sure to separate each code with a space) and click OK.
Close the game’s Properties window and launch the game.
Always remember to post you system specs, including the operating system, when requesting help.