Plutonium

Change your video settings without crashing the game (borderless windowed)
Make sure your game is closed before doing that.
Go in this folder %localappdata%\Plutonium\storage\iw5\players.
Then open config_mp.cfg with the notepad to edit it.
Find r_displayMode and change it to be like this (you can use ctrl+f to search for it):
seta r_displayMode "windowed (no border)"