You can watch your harddrive usage in ResMon.exe (Disk tab), if you'd like to see if your hard drive is part of the issue. Despite the streaming, PZ is pretty light on kilobytes per second. Have you tried the compatibility mode?
And disabling opengl triple buffering and turning off anti-aliasing. You need to set it to "advanced" view rather than "basic" in the options drop-down menu.
You can force a more recent, generic driver, if necessary. How to do this . . . someone else will remember for me, surely? I take it this is a rather old laptop? Mind posting the graphics portion of the dxdiag?
Oh, but such requests can devolve into expressions of ownership. Tomwa was likely been more general than replying to the original poster. The things we have seen.
My moderator-sense is tingling. All mentions of religion past this point will receive a warning. This, too, means the discussion of the comment itself, Roach and Brandon.
I guess all those "normal are the new easy!" arguments people throw around regarding modern gaming, and developers justify by claiming increased accessibility, is no encouragement what-so-ever. This is why I attempted to discuss current "sandbox" games that still impose restriction.