Blender Problems

I got a bit of lag. also, sometimes when I select verticies or open a menu, everything goes to black and all my objectices are red lines (like wireframe)

also, normally the lines inbetween verticies are 1px pixely lines. I like that, I can tell when its stright and everything. now it’s smooth and I can’t tell.

help!

Turn off anti-aliasing on your graphics card’s control panel. Maybe that would help, about the pixely lines. About it going black an all the objects turn into red wireframes, wierd.

ah!
I remember doing that.
thanks.