docs(general): add note on packet loss

docs/source/troubleshooting/general.rst

@@ -37,3 +37,8 @@ NvFBC, NvENC, or general issues with Nvidia graphics card.
   - You can usually bypass the restriction with a driver patch. See Keylase's
     `Linux <https://github.com/keylase/nvidia-patch>`__
     or `Windows <https://github.com/keylase/nvidia-patch/blob/master/win>`__ patches for more guidance.
+
+
+Packet loss
+-----------
+Some guests might work better with a lower MTU from the host. For example, a LG TV was found to have 30-60% packet loss when the host had MTU set to 1500 and 1472, but 0% packet loss with a MTU of 1428 set in the network card serving the stream (a Linux PC).