Hi @thePrince , For whatever reason, I got a new reply from you that's now showing here. But yes, I totally agree with your points. For reference, I'm using TPLink's own transceivers - TL-SM5310. But...

Hi @thePrince, Yesterday I had a remote sessions with someone from TPLink. And... news aren't that good. Apparently, according to the support guy I spoke to, this is not compatible. I couldn't really...

Hi @DaKings , I was wondering if you have found anything in your tests? Thanks, T.

Hi @Daniel2908 Yes, I did. Flow Control is enabled both in the WAN and the entire Switch to be honest. No difference. I think I've found the option you referred to, but didn't seem to work. Still...

Hi @Daniel2908, Not sure follow. I'm running standalone mode and Flow Control is already enabled in the Wan port config. Do you mean you set limits to downstream/upstream bandwidth?

@Morm Your test results are similar to mine. I had the same issue regardless of using TpLink or Wiitek modules. Inter-lan communication works fine between 10G and 1G ports in my tests using iperf, so...