If it works with Full VPN mode properly, it means there's a game item issue of mudfish.  Please send me some game packets using Packet Capture with Mudfish link while playing the game with Full VPN mode. I need some game packets to analyze this issue.

Hi. I captured game packets. Please check http://crs.loxch.com/report/files/20180416173226_packet_dump.pcap

Thank you for sending this packet dump.  However when I checked this packetdump, I can't see the missed IP blocks for game item. :-(  You said that without Full VPN mode enabled, PS4 can't connect to the internet, right?  Could you please double check your sharing configuration for Windows?  Please confirm that without running Mudfish your intenet connection from PST works fine.  It should work at least.

Thanks for your reply. I think my sharing setting is correct. Please check the attached file. Unless I turn on Full VPN, I cannot make PS4 works.  Although on my PC it works flawlessly. When I equip only Game item and What is my IP, all other traffics go directly through my network, not mudfish. And If I used "Whats my IP" from mudfish it show correct mudfish server i connected to. When play online on PS4 require connect to Playstation network first. Maybe it is problem ? When I test connection on PS4 cannot connect to everything.It seems shared network does not allow ps4 connect directly to the network, but only connect to the game server. (I can open browser and connect to Square enix website). Is it possible to add more game item such as Playstation Network server ? My guest is on my PC all traffic except equip game go directly through LAN1 (direct to my local network).  PS4 use LAN3 on myPC use shared network with mudfish (LAN2). This mudfish only allow traffic to go through game server so that's why PS4 cannot connect to PSN server or any other site as my PC.

I think your analysis is correct though I'm not sure how ICS (Internet Connection Sharing) is implemented on Windows.  Let me check it again.