Fine-tune xrdp

Set the kernel option net.core.wmem_max to 8388608 via issuing sysctl -w net.core.wmem_max=8388608. You can have this change persist across reboots by writing:

net.core.wmem_max = 8388608

...to /etc/sysctl.d/xrdp.conf.

Configure xrdp.ini

Ensure the following:

tcp_send_buffer_bytes=4194304
max_bpp=16

This was all that was needed to get my unbearably slow experience to something usable for connections over a private VPN. No tweaks to the compositor needed.

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