A few further suggestions based on another thread in this forum (see SketchUp doesn't run (properly) - #4 by Leslie):
Did you report the Bugsplats and quote your email address? If not, try the program(s) again, report the Bugsplat(s) that result, and you may get a response from Sketchup Tech Support.
Are you sure that Sketchup is still using the nVidia graphics card, and not the built in intel 4600? Use nVidia control panel to check, and change if necessary.
See if you have had a program called Plays.tv or Play.tv (I’m not sure which it is) installed by a graphics driver update (though this may only apply to AMD drivers). If so, uninstall it, restart Windows and try again.
Try using the 32 bit Sketchup programs instead of the 64 bit - uninstall the 64 bit versions, restart Windows, then install 32 bit. That might help.
If all that fails, and you have already tried the other things you quote, I’m out of ideas.