Issue itself: "An existing connection was forcibly closed by remote host'
A familiar issue to some, I'm sure, but this came out of nowhere.
My wifi is unblocked, and basically it'll let me play on a server for the snapshot for 30 seconds to ten minutes straight and then stop.
I have checked everything from hardware to MC versions, and I have concluded it is indeed a snapshot issue. This started back at 19w07a, but it's gotten worse with 19w08b.
Environment
PC is not strong, so I use Fabric and FoamFix to optimize the game.
Running the game with or without mod still causes issue.
No issues with wifi
No issues with server either
PC hardware works fine
See MC-38565.