MC 2018 getting stuck on splash screem

[AMCNitro]

Ive been using this computer at work for a few weeks without any problems.  MC was working way better than on the old PC.  Then one morning I try to start MC and it gets stuck on "running Command line commands", with a little help from google I realize that I need to turn off "hardware acceleration"(even though it had worked fined with it on).  Everything works now, except that regenerating a 2d ramp takes forever, instead of a fraction of a second. 

My questions are, how do I make it work fast again?  And, why did it work with hardware acceleration for a while and suddenly I had to turn it off?

[gcode]

Check your installed programs

I think you'll find that Windows updated your video drivers recently

If that is the case, roll back to your old drivers

[AMCNitro]

That did the trick, Thanks!