I've never had such problems before, I often left the game on in the tray.

I've seen that there have been many similar Reddit posts over the years, but there is no sensible solution anywhere. Have any of you had such problem before?

Steps I take:
- Launching the game
- Casting a fishing rod to leave my character AFK
- Minimizing the game to the tray
- After 10-30 minutes, regardless of whether I'm doing something else on my computer or I'm AFK, I start hearing game sounds. It sounds exactly like if I just logged in.

- The character stands with an uncast fishing rod.
- I cast the fishing rod.
- Repeat.

What I've already tried:
- Restarting the router
- Disabling power saving options

PC is connected to Internet via cable

Not sure if this is the same problem but last night I started AFK fishing, but my character stopped very soon after, meaning that I had done no fishing when I woke up.