up until 3years ago i used an A4000 with 68060 and CV 64 with high-speed serial port. It was fast enough at the time, the limitation was the fact that i was on dial up and the web browsers eg Aweb and ibrowse lacked functionality. the hardware itself was fine to render web page content such as jpgs, gifs, gif anims, frames. Certainly web page content has become more complex, but it sounds like its a network issue rather than the hardware being as incapable as you are experiencing.