Please try to change your mudfish node based on FAQ - Nodes If it doesn't work, you should use one of methods at Unsupported Games. And if you want to see it officially at Mudfish, please send me some game packets using Packet Capture with Mudfish link while playing the game with Full VPN mode.

Hello I just uploaded a packet dump on MapleStory 2. Is MapleStory 2 unsupported? because usually I get 100ms - 170ms but I have very bad lag spikes like around 500-600ms. Please advice thanks.

Umm... Are you meaning that your ping spikes are gone with Full VPN mode?