ER605 v1.0 Dowload/Upload speeds more than 1/2 the speed I pay for
I have a ER605 v1.0 on Firmware 1.2.1 Build 20220512 Rel.76748 being managed by a OC200 1.0 with Firmware 1.21.7 Build 20221206 Rel.58608. I recently upgrade from a 500mbps cable internet to a 2gbps up/down fiber internet. When. I was on the 500mbps plan, I would get speeds on my ER605 around 400mbps. I just assumed that I was not getting the full 500mbps I was paying the cable company for. When I upgraded to the 2gbps fiber plan, my download speed has stayed the same of around 400mbps, and the upload speed wne up to about 200mbps. I know with the ER605, I can only max out at 1000mbps, so I am not expecting the 2gbps speed I am paying for, but I would expect the download and upload speed to be right around 1000mbps and not hovering around 400mbps. I have not made much changes to my ER605 since taking it out of the box. Most settings are defaults. I do have bandwidth control turned off. I can not figure out why the speed is so low on the router. Any suggestion on what I can do to get the speed I should be getting?