AutoCAD LT :: Mouse Lag When Drawing Lines In 2011 / Windows 8

Just got my new work PC and I'm having issues drawing lines in AutoCAD LT 2011.

Much like other people, circles are fine, as is most everything else.  It's just the lines (and who uses lines when drawing things?).  So, as you can imagine, my frustration level is to the point where my head is about to explode.

Here are my PC Specs:

Windows 8
Intel Core i7-3770 3.40GHz - 8 CPUS
Memory - 16GB Ram
AMD Radeon HD 7770
2GB GDDR5 Memory

And this is coming from an old Dell that ran 2011 like a champ, the computer just got old and died.

I can't see any reason, component wise, why the CPU can't handle it, and, since it's just on lines, it leads me to believe it's a software issue where 2011 LT isn't playing nicely with Windows 8 or some other component.

Could it be that it's just time to get with the times and upgrade or is there some workaround?