I always found Ibrowse x.x to be reasonably fast on an '030 and up. In 1995 you had a 56k modem and was roughly in sync with the decoding speed of the images on native graphics, so it didn't appear to be that slow.
As I expanded to broadband later and also expanded to RTG/060 (1200T), ~ year 1999 I found that again, Ibrowse latest version, SSL plugin, up to date image decoding, Miami Deluxe, 060/X-surf/ Picasso IV was the fastest I've seen as far as web browsing experience on the amiga.
I realize much has changed in the landscape of web content, so of course much of this doesn't hold true today, but as far as "real hardware" was concerned, this was very spiffy indeed and was roughly the same, responsive-wise as say win98/Mozilla.