i am on spectrum i am using my own modem a cm500 with a model R6350 ac1750 weak wifi

[RDS707]

i am looosening my doorbell and driveway cameras oh i also have a linksys re6400 ext.

[plemans]

You didn't give us a whole lot. 

•  you have the cm500 modem. 
• What speeds do you pay for and what speeds do you get out of the modem?
• You have the R6350?
• what firmware is on it?
• you also have the RE6400 from linksys?
• Are the camera's/doorbell connected directly to the linksys or the netgear?
• how big is your home (sq footage)
• how many levels is it? 
• what are the interior walls made of? 
• what are the exterior walls made of? (certain materials block wifi)

[RDS707]

  sorry we pay for 200 and get 70 or 80 out i did a firmware update on my router so it is up to date the doorbell is connected to the ext the house is 3400 sq ft 1 level interior walls are sheet rock and the house is brick. when i run a speed test the down load dose good but yhe up load stalls and wont lock in

[RDS707]

it is looking like i might need to go to a whole house mesh system thanks everyone