You can use a tool such as Photoshop to reduce the resolution to 72dpi if you haven't already.
You can also reduce the quality of the GIF when you save it.
Using the export for web & devices wizard in photoshop should do the trick with some tweaks.
You can also reduce the quality of the GIF when you save it.
Using the export for web & devices wizard in photoshop should do the trick with some tweaks.