GL-X3000 with Tmobile download loaded latency much worse

Just set-up the GL-X3000 and before setting up I was getting unloaded latency of 56 and Download Latency of 30 with the G4ar modem and the waveform 4x4 antenna. When replaced the tmobile with the GL-X3000 the download Loaded latency wen up to 120 - 150. Is there some setting I am missing? The Upload Loaded got better, but download loaded got worse.

Hi,

Is the SIM card same one in the comparative test?

Can try locking the prefer tower (signal).

Yes, same SIM same everything. Only difference is the modem/gateway. I only have the one tower I am connecting to so I dont think it is that

Is there only one base station tower around?
Probably not, there is a high probability that they are not connected to the same tower.

Did you try locking SA/NSA or LTE?

I have one tower that I connect to. How do you lock SA?