Optimise your WiFi and, where possible, connect your router directly to your PC using a fixed Ethernet cable rather than a wireless connection.
While many broadband users may feel that they have an issue with their actual broadband connection, many performance problems are actually caused by WiFi set-up issues. If you have the opportunity, and your particular computer or device has a fixed location, we strongly recommend connecting your device directly to your router via an Ethernet cable. This is particularly important for smart TVs and video streaming devices since streamed video-on-demand services requires very high, steady bit rates. For example, live Ultra HD content on BBC iPlayer requires a steady connection of about 40 Mbps, and Netflix recommends 25 Mbps for the best quality. By using an Ethernet cable rather than a WiFi connection, you are likely to suffer much less from stuttering and buffering with gaps while content tries to load (e.g. the dreaded Netflix red loading circle). Furthermore, if a WiFi connection makes your connection less reliable, streamed services tend to reduce the bit rate used (degrading picture and audio quality) so you may not be watching the best quality possible.
Obviously, wireless connections can be extremely useful to bring Internet connectivity to mobile devices, such as mobile phones and iPads. However, wireless connectivity can potentially degrade Internet connectivity, particularly if a device is not located very close to the wireless router or if there is wireless interference. To help you get the fastest speeds from WiFi, we have developed a separate WiFi optimisation guide: