Strange networking issue possibly regarding Windows 10

[Zinx777]

You cant change the windows size/default buffer size on windows 10 manually BUT you can change the autotuning levels:
https://docs.microsoft.com/en-us/windows...ing-levels
You change the autotuning level with this command: netsh interface tcp set global autotuninglevel=<Value> replace Value with the desired value I guess.
See if something there will fix it for you.
Actually found out that for me the autotuning is disabled lol so it also might explain why I get issues I guess.

BTW both KHBBS and PSP2I suffers from the infinite loading thing I noticed (happens on KHBBS but less frequently and its more dynamic there).
I guess they got a similar netcode somewhat , I wonder if changing the TCP autotuning helps with that.