I have a 2000 sq ft home and have no signal issues using this router/ cable modem. I actually have a Media closet where I all my wired Ethernet jacks terminate and that’s where this router sits. No wireless signal issues downstairs Thru Sheetrock walls with no insulation. Upstairs I use a wireless extender. Doesn’t work well when I go outside either.
Took the Suddenlink router back to the them and bought this one. Easy setup and overall great cable modem router. Glad to get rid of the cable company equipment.