I keep getting a spam on Mudfish that says "MUDEC_00238: Packet loss rate 1.6% to US Central (Dallas, TX - Secure Dragon) over and over. Any idea what’s causing this?
This is a warning message reminding you that there’s a packet loss affecting your connection between your desktop and mudfish node (at here US Central (Dallas, TX - Secure Dragon) because you’re using it at one of items). Please be careful when this error message is shown but no way to suppress this warning. If you don’t want to see it, just close the browser. 
It’s only a way at this moment.
I don’t think so but it means 1 of 20 packets is got dropped. Need to be cautious to this node because it could affects your connection stability. Only ways to avoid errors would be using other node.