If you're serious and not being sarcastic by a factor of ~10x, you have a serious problem.
Yeah...
5GHz works awesome same room for me. As a test outdoors line of site, 5GHz works just as far as 2.4GHz (out to well beyond 150ft and in to having to climb fences in to neighbor's yards)...which makes sense, its obstructions that are an issue.
My tablet works fine at up to roughly the same point where 2.4 and 5GHz both start losing speed, then 5GHz quickly drops off (at a suprisingly long range, as it is through a 4ft masonry chimney and out about 25ft away with my body also between the AP and my tablet) while 2.4GHz keeps chugging (slower and slower).
At my kitchen table my tablet is just as fast on 5GHz and 2.4GHz (around 60-70Mbps)...my laptop not so much. It goes from ~200Mbps same room on 5GHz down to around 70-80Mbps at my kitchen table (about 1-2ft of the masonry chimney and obliquely through two walls and about 12ft total distance) while 2.4GHz went from 180Mbps same room down to around 160Mbps at the table. I think it is a reflection issue with MIMO though, which is why my tablet, which is only 1:1 doesn't see really much performance difference at all, where as my laptop, which is 2:2 sees a big change.
Anyway, I can stream 1080p (12Mbps bit rate) okay across my house and in my room with that 4ft masonry chimney and 3 walls between me and the AP if I turn my basement router's wireless off below my bed. A little slow to buffer at first, but okay on 2.4GHz. 5Ghz not so much, but if I step out of my room and its just the hallway, 30ft and the fireplace I can stream 1080p over 5GHz 11n just fine too (I can just barely see 5GHz laying in bed...-90 to -91dBm on InSSIDer, 2.4GHz is -70dBm).