N600 C3700 Wifi Speeds Slow

my 2,4ghtz will be 300, then dwindle to 50, to 10, to 120 and then typically settles in at slow as S**T around the 50's.

I've had my work IT guys from work try to help, but they said its in the firmware of the unit.

I end having run on the 5ghtz most of time, which has a shorter range and I'm fine with, my family in my house stuck using the 2.4 network as it slows to a crawl.

Resets don't solve, but next day it seems to fix itself and then slow begins to degrade.

I've check all the db settings, signal to noise stuff and all checks out good.

Just sucks that Netgear cares so little - have a Netgear community to lets its users solve their problems instead of providing not support/solutions to its consumers.