LTE Modem Slow down Fast up

Hi.

Never had good success with these but I have the perfect need for it. I purchased the additional antenna and have that hooked up.

On my phone, in LTE/2G/3G mode, I get 60+ down and 10+ up.  In the same spot, I have the LTE modem, same sim, get about 3 bars and run a speed test: Less than 1 Mbit down, and about 10+ up.

Is there some rate limiting going on? I did the firmware update, no help. Something I'm missing?

I ordered the newest version to see if that will help....oh, I use T-Mobile.

HELP?!

Thanks,
Phil