Yea, yesterday I changed mine to 1000. There were two places that I changed from 200 to 1000. Restarted the services, and then I was actually able to create a message up to 1000 characters. All seemed promising, but then when trying to publish to the display, nothing happened. I changed it back to 200 and it worked again. Then this morning, I thought i'd try it again and set it to 800. Now I get the page hanging issue. Strange.