Your photo of Speedtest looks just like many that I have conducted over the last month in downtown Portland Oregon!  I have called Tech Support and talked to half a dozen reps.  They elevated my complain at the end of June.  I finally got a reply at the end of the first week of July.  The answer is that the network is overloaded in downtown Portland and that they need new towers.  No idea when that might happen!

As a result I canceled my data modem (LG V600) and the data speeds were abysmal in the Verizon office here in downtown. I don't see how Verizon markets 4G in Portland with speeds that are slower than DSL!