GX450 Slow internet speed with Verizon

Has anyone been having issues with GX450 and slow internet speed using Verizon sim cards??
I have 22 units and have started having issues with 6 different units, those 6 units would have 10 to 14 Mbps upload and download speeds. Now they are running anywhere from 1 to 2 Mbps.

Hi jkirk1,
There could be lots of variables that can hinder the speed. It may not be due to the GX450.
Could be the sim card, antenna, network bandwidth, remote location, weather, etc…
Hard to give one definite answer based on little info.

You can also check with Verizon of any issues with their network in the area.