@Scorps75 May I know what is the network bandwidth you got from your ISP? Who is your ISP? Just as you mentioned, please check and confirm if the ISP modem connection is stable, you can connect the...

@ashwink I'm afraid we cannot provide you that info, and our developer may only test the performance with the original antenna.

@Sukhchain We have reported the issue to the support engineers, they will likely reach out to you via email to continue to troubleshoot your issue.

@nassos69 Hi, we are not sure if you can buy the original antennas for the MR6400 in the local market, you can check with the local sales team or check with the local stores. If you cannot get the...

@SR1646 Definitely sure. We will update this thread once the engineers locate the issue and provide a solution.

@balangaman Hi, can you please check the troubleshooting suggestions we provided here, then get back with the results? We will suggest further: https://community.tp-link.com/en/home/forum/topic/261882