@Somnius80 I don't have R470T+ but I'm using ER605 router. For my router if I setup link backup, the backup WAN will just inactive and all data traffic can only go to primary WAN. I think you may try...

@stu8 tx and rx rate depends on actually environment, and the performance of the BTWholehome disk. CPE210 supports 300Mbps in maximum, but anyway the Ethernet port of this CPE is just 100M. So even...

@AsapDelta Try to only enable 5Ghz SSID on EAP225. In most of the time 2.4Ghz is not good at speed.

@Martymonster Not sure if I understand you correctly. But if you are using OC300, you can modify what you want to see on Log->Notification option.

Did you set up static IP on your PC?

@MaLong It's better to contact your ISP and ask what device you need to buy. TL-SM5110-SR is just a SFP module. You may actually need a "fiber modem".