Problem with the TCP connection at 10Mbps

hi alecn50.

W5500 is an operation to the length of the cable 120m. If you want to send the W5500 can give samples. Try considered.
You say the firmware is not a problem, we want to try your review. Are you okay?
There is a possibility that there is a problem that you have not discovered. We’ll review.
And your circuit recommend trying one more check.
I will attach the circuit that we recommend.
Thank you.
W5200E01-M3 REV115_20140625.pdf (157 KB)