As I reall you gain speed by all reductions of fancy stuff. Especially on low end computers like the 400 Mhz G4. I noticed that on the previous verision of the client on a 7300/200 and a 7500-G3/350 as well as a G4/400. I thought I posted some numbers about it but I can not find it here or at D2OL.
Just open the terminal and type "top" and do a return
There you willl have lsits of CPU usage of gridwin.exe as well as front end D2OLagent and the CPU usage for your particular hardware and software will be revealed
