I have the same AMD Athlon 64x2 and would advise you to keep update 'KB4056892' hidden until such time Microsoft or vendor AMD issue a fix.
I agree, but if they offer a "good KB4056892" for my machine, will it come through if it's blocked, or will MS give it a different designation. The articles weren't clear on that.
I'm probably low risk so I'll just wait for something definitive.