Pathetic upload speed and more frequently higher latency noticed than usual

My plan has been the 1 Gig (on my account it actually says i should get 1.2 gig) for many years now. Of course I know the tech, I know the advertised speeds for cable are pristine conditions only and its mostly marketing [Edited: "Language"] when they advertise -- because yeah you do hit that speed for short durations at a time but you do not mantain that speed consistently all day every day and anyone out there that thinks otherwise is ignorant and I don't care it that person is a Senior Network Engineer for the Pentagon , NASA or otherwise.  

But anyway I normally measure 880 and sometimes tap 1100 for download, uplaod is normally 45 .  

Well only starting in the last two weeks download still is pretty decent but upload is trash...I've measured *LESS* than 1 meg five different times on random days now and the latest was just now. 

Latency has gotten worse by a little not a ton but in games where I consistently ping 30-33 ms for a couple hour session, is now no better than 48-55 ms more often than now, one day it was 90 ms for an hour. 

I chagned nothing on my network -- same router, same modem, same co-ax, same ethernet cables.  Latest drivers for the NIC installed, router has no updates for firmware atm.

Just curious on why this is happening seemingly out of nowhere.