Im running a windows Vista with 767 RAM and ADM Athlon 64 X2 Dual Core Processor. And i think its more than qualified. Also it can play Flight Simulator X at normal graphics
Bam, problem solved. Blockland (and garrys mod) both mess up on my vista computer sometimes.
Try er.. Uh...
A reinstall? And then try hand installing all the addons you want, my blockland runs really fast now becuase i:
1. don't have any weapon addons
2. only chose the good vehicles i use
3. dont have bunch of random GUI's etc