For a test, does a computer hardwired directly to the router / gateway device with an ethernet cable have the same problem ?
What do the modem's signal stats look like ? Try getting them here http://192.168.100.1 or here http://10.0.0.1
Please post the *Downstream Power Level*, the *Upstream Power Level*, and the *SNR* (Signal to Noise Ratio) numbers.
What is the exact make and model number of the modem ?
Some tips for improving WiFi performance;
There are other options. Google for WiFi repeaters / range extenders, WiFi mesh systems / pods, powerline ethernet adapters, MoCA adapters.
This is what I get when I click on 10.00.00.01:
I couldn’t get the 192 page to load, so I’m not sure about that. And I’m not sure about downstream or upstream power level either.
I don’t know about the make and model number. I looked on the bottom of the gateway and found a bunch of random numbers but it doesn’t specify which is the model number.