@alzhao - The following firmware: “openwrt-mt1300-3.203-1012.bin” fixed all of my issues. Ethernet related issue was fixed by this tutorial. I personally love GL.iNet products and will keep buying them as I see that you really listen to our feedback and address most of the issues. It’s still a looong way until the GL.iNet custom firmware is 100% bug free & performant… Thanks much & GJ, guys!