Yes, I really don't understand computer stuff, so linking me to sites that compare cards and use a lot of tech jargon isn't very useful for me. But question and answer sites where people ask questions and are answered in plain layman's terms is.
Basically this video card is older than dirt and was a pretty bad one when it was released is what I'm getting from what I read. And I should be grateful it plays the game competently at all. I was just wondering what happened--if anything--to make it suddenly start playing whacko on me when, until recently, it played the game well, even on high settings. And what--if anything--could be done to help it, aside from lowering my graphic settings and/or buying another card altogether. Gonna just suck it up and play as best I can and move on.
Thanks for your assistance and patience with me in this matter.