@MathewR Hi, did both the Ethernet connection and wireless connection have the same unstable speed issue? Have you checked the LTE band status when the speed slows down every morning and is it the...

@Prayag31 Hi, the firmware link has been updated: MR6400(EU) V5: https://static.tp-link.com/2020/202012/20201208/TL-MR6400(EU)v5_1.1.0_0.9.1_[201113-rel63736]_up_boot_all_2020-12-08_09.38.45.zip...

@Prayag31 Hi, please have a look at this link: MR6400(EU) V5: https://static.tp-link.com/2020/202012/20201208/TL-MR6400(EU)v5_1.1.0_0.9.1_[201113-rel63736]_up_boot_all_2020-12-08_09.38.45.zip Thank...

@LESC Hi, Sorry for the delay. I have also seen the virtual server/ DMZ issue on another post. So Did both issues(virtual server & WAN / LAN Different IP range ) still exist, or only the virtual...

@neg3ntropy Hi, Have you tried to enable the guest network and tick 'enable QoS for guest network', then connect the client to the guest network to upload the large files? Thank you very much and...

@StarSky Thank you very much and I have already forwarded your case to the senior engineers. Hope you two could fix this issue very soon.