X3100 & WEI suck, but 192 is very low score for X3100 according to http://www.notebookcheck.net/Intel-G...00.2176.0.html
Check your video buffer, cuz X3100 doesn't have dedicated video memory.
And check your GPU speed with GPU-Z !
DDR2 533 isn't very slower than DDR2 667.
EDIT: Check your power plan (Make sure "Link State Power Management" is off)
EDIT2: I've similar problem when I use battery. cuz my nvidia PowerMizer has problem.