@Poletip Hi, did you set up a static IP address on this device? If yes, there is no need to reserve this IP for it again. Or actually, you want to open ports for this device, and address reservation...

@LEoTHeDude Hi, thank you for getting back to me. Is your network map like: /------<Wired>-----M5-1~~~~<WiFi>-----M5-2(living room) ISP modem---Main Deco M5----SG108E Could you please help me test...

@LEoTHeDude Hi, the Test speed feature under Deco APP>More is testing the speed from the main Deco to the modem, not the current speed on your smartphone to Deco. So it does not matter whether you...

@Vcunha Hi, I see it does not have a yellow LED, only red and purple. After the previous reset, did you see the pulsing blue LED? I suppose the yellow and red lights are somehow mixed together then...

@Xijinping Hi, thank you very much for getting back to me. I see there are 3 Deco S4 under your TP-Link ID and did all of them have the unstable speed issue, or just one unit? Have you ever checked...

@GLA0162 Hi, welcome to the community. Since the original post was a little old, there are several versions of firmware that have been released to optimize the performance. Not sure if the previous...