I am wondering whether anyone has experienced any similar issues with subpar internet speeds on the new Google Chromecast with Google TV. Both on WiFi and on ethernet I get underwhelming speeds of 40-50Mbps while my phone, laptop or desktop in the same spot easily get into ~250Mbps wirelessly.

I could understand the WiFi issue: the other devices are larger and have more room for antennas so it is understandable that they can pick up WiFi better. But I do not understand why the ethernet performance is so slow. Because I cannot get the official Google ethernet adapter in my country, I bought one from Cable Matters . It is a USB-C adapter that you plug into a power socket and attach the ethernet cable to, and then you forward that power and internet to the USB-C port of the Chromecast (or any other USB C device). This works perfectly fine with my desktop where I then get those ~250MBps speeds. But on the Chromecast (same ethernet cable), the speed is always limited to around 40-50Mbps, both on WiFi and with the ethernet cable. WiFi was disabled when I tested the ethernet performance.

So what is going on. The adapter is not broken, because it works fine with my desktop. So I would think that something is wrong with the Chromecast. It is fully up-to-date. But looking at other people's reviews, they are easily getting 100Mbps+ speeds. Did I just get a device with a lower-spec internet chip? Has anyone else experienced this before? All tips welcome.

PS: some of you may argue that "50Mbps is fast enough as it is", but I am just trying to understand why the speed is slower. Also, in my case I am trying to stream high bitrate content via Plex so I need a stable 50Mbps connection at least.

EDIT: Unfortunate that this is getting down voted. The post is not intended as critique on the product.