You don't mention what version of AutoCAD LT you have, but there is a known
issue with cursor performance in AutoCAD LT 2010 with Windows 7 Aero mode.
The workaround, as you have found, is to turn Dynamic Input off.
--
Kate Morrical
AutoCAD LT Technical Marketing Manager
http://blogs.autodesk.com/ltunlimited
"cmckinven" wrote in message news:6376791@discussion.autodesk.com...
> I've recently switch to Windows 7 desktop. I've increased memory and
> included an advanced video card. The only problem with running Autocad is
> using "Polar Tracking" and "Dynamic Input" together. When in the line
> command (for example) the mouse jumps like "Grid" would be on. Also,
> certain comands have slown down. To temporary solve this problem, I only
> use "Polar Tracking" and it works great. Does anyone have any ideas as to
> why? Is this a setting mistake?
> Thank you in advance