I have 2 new GoCoax MA2500D MOCA adapters with 2.5GBE switches, cat 6 cable and 2 machines running RTL8125b 2.5GBE network cards.

The problem I’m having is that transfers to the file server write at close to 210MB/s (not great, but good enough) but the read speed is terrible at only 50MB/s.

I have turned off EEE on both machines, MA2500D updated to latest firmware. The MOCA splitters in use are wideband and explicitly MOCA compatible. One holland 3-way moca splitter with a POE filter outside the house, one “sunburst” moca 2.0 compatible indoors.

I don’t expect mega speeds when reading and writing are occurring at the same time, but what could the issue be?

Here’s what I tried so far.

• LOOOONG ethernet cable wiring both machines together = full 2.5gbps speed in both directions.

• LOOOONG ethernet switch cable both 2.5GB switches together = full 2.5gbps speed in both direcitons

• Both MOCA adapters plugged directly into each machine, same problem.

• I powered off my cable modem, same problem.