Comment 70 for bug 744808

Thanks for that tip Jurgen, that restores the snappy speed I expect from my system. (Sempron,Nvidia,Debian,noveau driver)

However a tweak does not really Fix the bug, and to that end, I'd like to know if this sample page is the same problem? (or if I should file a new bug report that affects current Iceweasel/Firefox and Seamonkey-2.33.1)
http://seahorseCorral.org/weatherRadar-tiw-overlay3.html

Without tweaking anything, the refresh rate is about once per 20 seconds. Effectively makes the page useless in Firefox.
and adjusting the page zoom does not change the behavior. Idea: Try using the menu, it may take 2 minutes to navigate to the zoom settings... :P

When the image width and height are 1:1 to the actual size, it works fine:
http://seahorsecorral.org/weatherRadar-tiw-overlay1.html