@SeByDocKy What is the symptom of the crash? Please try to describe the LEDs status when it crashed, can you see its wireless network when it crashed? You can try to reset it to factory defaults...

@Jeweljene Please refer to the below FAQ to do some basic troubleshooting if the speed is not good when connected to the router network: https://www.tp-link.com/support/faq/2170/

@TL-WR840NNN If the speed is slow when connecting to the WR840N, please verify which case are you belonging to: https://www.tp-link.com/support/faq/2170/

@Arun223 The Archer C50 has 100mbps WAN/LAN ports, that is going to be a bottleneck for you, it would be better to upgrade to something with a 1GB port if you get a speed of 300Mbps.

@Thadboy That's bad. Disable the QoS then if it doesn't help. Just to confirm, does the issue happen all the time when you are trying to play YouTube, or it actually happens some time during...

@spa_bg79 Thanks for getting back. We have already reported this to the Tether app dev team, they are evaluating how to improve this. Please wait patiently and keep an eye on the new Tether app on...