Have you updated the overwatch item recently? The game traffic won’t go through mudfish in 90%+ of case. Instead, I need to apply the full VPN mode to make it working? Can you please check it?
If possible, please send me some game packets using Packet Capture with Mudfish link while playing the game with Full VPN mode.
I need to check some game packets. 
As you might guess, I didn’t update the overwatch game item.