I'm sorry to hear about this. I've run some tests on your line this afternoon and I haven't been able to locate any underlying faults, with the connection remaining stable and the download speed reaching the router at a rate of 79.9Mbps. When you're experiencing issues with the speeds, are you connecting over Wi-Fi or Ethernet cable to the router? Additionally, is this occurring across all of your devices, or only certain ones? If connecting over Wi-Fi, I'd recommend checking out this guide on how to make the most out of your Wi-Fi experience. It may also be worth splitting the frequencies your router is operating on and we have another guide on this here.
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