MHFU Mp problem

[tywald]

Make sure these are turned off in the PPSSPP settings:
1) Fast memory(under System)
2) Timer hack(under Graphics)

Then make sure PPSSPP is allowed in your firewall for both public & private networks. If you have antivirus with built-in firewall you will need to check it too, many have problem with like McAfee, AVG etc.

If you are 100% convinced you have everything correct on your end then it could be them who have the problem.