So, the latest Windows 10 update is causing games to crash upon launch when trying to use game capture with OBS Multiplatform. This problem persists for a number of games, including The Division, Dark Souls 2 & Fallout 4. The temporary fix for this is quick and easy, simply delete the following file:
OBS are aware of this issue and hopefully an update will be dropping soon to fix it!
Update: This issue has been resolved in OBS Studio v0.13.3.