Hey Mmau89-
I’ve updated to the 5.0.1 runtime and was able to open the editor in 4.7.6 using an NVidia GTX 770. It is possible that the graphics card is causing your issue however without exact reproduction I can’t say for certain if that is the issue. I would ensure that your drivers are up to date and not on a beta version before changing the video card completely.
Cheers