My ping has been super unstable lately in blade and soul. It drops down at certain times of day and goes much much higher than my regular ping at other times. I’ve been switching between multiple nodes but all seem to have this problem.
Did you check your ISP side too? Normally if your issue is happenning regardless which mudfish node you picked, it could be related with your ISP.
Usually when I game using my regular internet the ping stays at the same spot across the whole day, so I doubt it is my isp. For example, if I pick a node called “HudsonValley” it runs fine a whole day but then it instantly starts spiking my ping very high by the next morning, and upon switching to another node this gets fixed or worsened depending on what server I choose. It keeps repeating for every server like this. I’ve been testing out alot of nodes and seem to have found somewhat a stable system, but even this one changes randomly at times of day but not as severely as the other nodes.
I’ve been using TCP mode and fastconnect enabled in my settings for blade and soul too incase that helps.
It seems to have a red line over “lag-24.ear2.NewYork1.Level3.net”(4.68.111.101).
Cool! 
I hope now everything goes well with mudfish. Please let me know if there are any other problems.