Couple of things, one that P4 class cpus are simply not enough, I have noticed this. Apparently DFO takes good advantage of advanced instruction sets and modern cpu architecture because no matter how good of a p4 or older AMD someone has, they all seem to lag during sieges.

my best suggestion to you guys is enable animation reductions, and try and fine a -nosound switch for dfo, or use a trick that prevent dfo from loading sound at all. I forget the specifics and have not tried with dfo yet, maybe someone else can help with the specifics.

For who could be free when every other man's humour might domineer over him? - John Locke (2nd Treatise, sect 57)