My console login is very slow - sometimes cannot login at all.  Then when I get in it is very slow - sometimes unusable. 

A reboot sometimes helps a bit, but always quite slow.  Tried wifi, hard-wired, etc - no difference.  Worked when I first bought it, but not anymore.

It is an Archer C5400 - about 2 yrs old.  Any ideas? 

Thanks,

Cam

PS - I have LOTS of connected devices and get speeds 300 - 550 MB/s performance.  Very good internet - just slow console.