Wi-fi speed much slower than cable

I recently joined Post office broadband and it has provided me with ZyXEL AMG1302-T11C. The router is positioned only 2 metres from my PC. The issue of slow wireless speed affects all other mobile devices in the flat. When connected via ethernet cable my PC speed is stable 12.5 mbps, however when disconnect  connection speed drops and varies b/n 0.4-5 mbps. I did not have any similar issues with my previous ISP. I have also attempted to change wifi chanels and chose one not affected by the other routers in my building.
I would be grateful if anyone suggests any possible solutions 

All Replies

  • Hummel
    Hummel Posts: 212  Master Member
    First Anniversary Friend Collector First Comment
    What is the firmware version you are using?
    Is it the latest version?

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