I'm currently using mine as a coaster. So far that's the function iPad performs without endless hours of trouble shooting. After a hard day at the office it's the last thing I want to do. I'd be happy if I could do a little research surfing safari or opening up Facebook without it taking an hour. I've tried every tip. Closing background apps, restarting, resetting, changing DNS, checking DLink settings, etc.
I haven't tried to watch a movie or vid clip recently as I'm afraid my $700 coaster will make a hole in the wall I'd throw it at. Every other wireless device works great - and so did my coaster for the first six months or so.
If anybody could provide some not so obvious suggestions I'd really appreciate it. Let me know if you require any additional information. Thanks!