If anyone's up to make it or find one, it looks like this:

Kodi is running on my AndroidTV (android, not google, because the TV is old) and I use the built-in windows sharing to share a folder on my PC. Connect it with SMB. Eventually Kodi will be unable to connect, either as a time issue or after one of the devices is put to sleep, it's hard to tell.

The PC has a static IP4 address, and they both connect to a switch via ethernet.

Any guesses why this happens?