7.6 or 8.6 would definitely be faster and adding more RAM would helps speed things up a lot too. OS 9.1 does drag a bit on the pre-G3 machines and with 64MB of RAM you've not got a lot of spare memory to play with, but 8.6 and 7.6 are less memory-hungry.
Another thing to do is try enlarging the amount of memory assigned to the browser applications. Highlight the application icon and select "Get Info" from the File menu. It will reveal a window where you can adjust the memory allowance for the application. Try adjusting it to a suitably large figure, (bearing your RAM constraints in mind), and run the browser.
Also, for browsing under OS 9 may I suggest iCab? I find it generally gives good results and is more comaptible with modern pages than older versions of IE and Netscape.
Another thing to do is try enlarging the amount of memory assigned to the browser applications. Highlight the application icon and select "Get Info" from the File menu. It will reveal a window where you can adjust the memory allowance for the application. Try adjusting it to a suitably large figure, (bearing your RAM constraints in mind), and run the browser.
Also, for browsing under OS 9 may I suggest iCab? I find it generally gives good results and is more comaptible with modern pages than older versions of IE and Netscape.