There are many alternatives to fix the internet speed issues of the Tp-link routers. It basically depends upon the issue that your router is facing according to which the user should take the action to fix the issue. Here are some methods that you can perform to fix the internet speed issue of the Tp-link router.
Check your Ethernet Cable that it has properly attached with your router, modem, and system or not. If you find doubt in any of them then tighten it. It might escalate the speed of your Internet.
Fix the Extender between your router and the Network source. If there exists the blockage between your route and access point then it might eliminate that barrier and provide you with enough Wi-Fi signals. This will result in the enhancement of the Wi-Fi performance.
Update the Firmware of your router, it will increase the stability and performance of your router. Firmware controls the security mechanism, networking protocols, administrative features of your router. Keep this software of your router to maintain the stability in your network.
If all the options get failed then reset your router, it will not only restore it back to its default settings but also eliminate all the bugs and Trojans from your router. It will refresh your router and help in providing you the high Wi-Fi signals.