Specs:
Autocad Civil 3D 2011
Dual core 2.8 Ghz
GTX 260 (Graphics Card)
8 gigs of DDR2 ram
Dual monitors
Windows 7 64 bit
Lags when I first open Civil 3D 2011 but it gets better after around 45 seconds. The biggest problem is when I insert a PDF. It will take 2-3 seconds after moving the mouse before the computer / Civil 3D recognizes that I moved my mouse, clicked a button, or did anything at all. This happens continuiously no matter where my mouse is or what I am doing till I delete the PDF from the screen.
The processor never exceeds 30%-40% usage and there is still plenty of RAM not being used.
Anyone else experience this problem and have any idea how to fix it? Starting to think there is just something wrong with Civil 3D 2011 when it comes to PDFs.
What kind of CPU do you have? If it's an old Pentium D, then your problem might simply be slow CPU. When I insert PDFs into drawings, it does slow down C3D a fair bit, but nothing like what you're describing. I mostly just notice that panning/zooming around in the drawing gets rather slow when PDFs are in there.
http://www.newegg.com/Product/Product.aspx?Item=N82E16819103861
That is the CPU I am currently running.
Yes, that's a pretty old chip. As I recall, it was better than similar Pentium-D chips, but in the same class. It could be the heart of your problem.
There could be something else going on, but your CPU is definitely on the weak end for Civil 3D.