@Clive_A After many further tests and going without full usual network config, just my pc + server + router i figured out where exactly problem is. If i set ANY of the ER707-M2 2.5GbE ports to 2.5G,...

@Clive_A I think i provided all necessary information - 1gbit port works like a charm - i can saturate 1/1gbit on it, but when i connect to 2.5gbit port i can saturate it to 2.5gbit download and...

@Clive_A If i could sum it up - #2 2.5gbe port using 2.5gbe connection on both ends always ends up with only 300mbit upload. When i force switch this port (#2 2.5gbe) to 1 gbe it gets full 1gbit up....

@Clive_A ISP is 2/1 on #1, on #2 i had either my pc, ubuntu server (both have 2.5gbe cards) or TL-SX3008F with sfp+ 10gbe. Problem: #1 ISP, #2 my pc - 2gbit down, 300mbit up #1 ISP, #3 my pc -...

@Clive_A Is there any information on reduced speed on port #2 (2.5gbe)? I have 2.5gb down on it, but only 300mbit up. While i use other ports i have 1/1gbit. When i switch manually port #2 to 1gbe it...