<p>Aaand fixed. SSH works again.</p><p>Iperf: 766 Mbps</p><p>SFTP /dev/zero: 32.6 MB/s (260.8 Mbps)<br />SFTP QSPI flash: 14.6 MB/s (116.8 Mbps)</p><p>This is using 64-bit transfers for MCU -> FPGA transactions on Ethernet transmit only, everything else still 32 bit.</p>