@tunc How about other devices in the network, are they able to get online when connecting to the router Wi-Fi? If not, please refer to the setup video to check the settings on the router:...

@Livi May I know how often did CPU spike to 90-99? Where did you see that? Please share with us some screenshots, thanks. Please check if there are some high load activities in the network when this...

@Prakhar Is the power supply not stable in your house? Generally, we suggest you use the original power adapter which is included in the router package box to avoid any potential issue. BTW, if you...

@imoi You seem to have a different model, it is suggested to discuss the issue in the below sub-forum, please open your own topic: https://community.tp-link.com/en/home/forum/121

@marcomesias What if you try to disable the NAT boost and the Smart Connect on the C80, will the issue persists? BTW, does this issue happen when you first installed the C80, or this happens after...

@RaYFx If that is the case, I'm afraid you need to disable the DoS Protection completely on the router to use the VPN connection. Our developer is reviewing the mechanism of the DoS Protection...