Fusion is really heavy with javascript and demands a modern browser for optimal performance. IE7 does not classify as a modern browser.
>From our experience, the primary bottleneck is the legend widget and its woefully inefficient method of retrieving legend icons, which is magnified with the number of layers you have. You do not see the issue in the AJAX viewer because My github fork (https://github.com/jumpinjackie/fusion-multimap) has addressed the map loading and legend performance issues, but sadly this solution uses techniques that are only supported by a modern browser. I have yet to port these changes back to the official fusion repo due to other changes to support multiple maps being broken in fusion trunk. The two features are somewhat intertwined, making it somewhat hard to cleanly port over, especially when one part is absolutely broken. If you *really* have to use IE, make it at least IE8, but if you can you should really go for IE9. It is actually a half-serious attempt at a modern web browser from Microsoft. In actual fact, IE9 actually performs better than Firefox/Chrome from my tests with both Fusion and AJAX viewers. I was actaully blown away when I saw the AJAX viewer load in a blink in IE9, where it took several seconds on Firefox and Chrome. So I would only go with Fusion if you can standardize on IE9/Firefox/Chrome. These are the browsers with enough grunt to handle the javascript. If this is not possible, then you probably have no choice but to stay with the AJAX viewer. Not that it's a bad thing, the AJAX viewer is tried and tested. - Jackie -- View this message in context: http://osgeo-org.1803224.n2.nabble.com/fusion-viewer-performance-vs-basic-viewer-tp6824506p6824779.html Sent from the MapGuide Users mailing list archive at Nabble.com. _______________________________________________ mapguide-users mailing list mapguide-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapguide-users