SLOW INTERNET

[javc2000]

I get 400 mbs to the modem, then drops to 20 to 50 mbs...I have Spectrum original Modem and Orbi system routers. Spectrum techs have replaced the modem once and I got 200 mbs from modem thru routers...can I replace the Spectrum modem with a NETGEAR modem?

[FURRYe38]

What Firmware version is currently loaded?
What is the Mfr and model# of the Internet Service Providers modem/ONT the NG router is connected too?
Is the speed test thru a wired connection or wireless? 

What is the size of your home? Sq Ft?
What is the distance between the router and satellite(s)? 30 feet is recommended in between RBR and RBS to begin with depending upon building materials when wirelessly connected. https://kb.netgear.com/000036466/How-far-should-I-place-my-Orbi-satellite-from-my-Orbi-router