[0.17.79] Low FPS and low GPU usage in multiplayer modded

[Venator]

Playing some multiplayer - either of us can run the save absolutely fine, no issues, 60/60 fps/ups in singleplayer. If I host the save, I get 60/60, the friend gets<40/60. If he hosts it, we both have 60/60 FPS/UPS.

both of us have very reasonable CPU/GPU usage in all scenarios somewhere in the 30-50% range. We both have relatively equivalent relatively good gaming PCs. the only major difference between them is I have 50% more ram, and its clocked 50% higher (although I guess we have different processer brands).

The Internet seems to not be the issue. mine is worse at 80 up/20 down. The base is fairly large now, his fps was fine a few weeks ago. It's still under 1GW power usage. Theres a bunch of mods installed, including all of angels and bobs mods. The game is on peaceful mode (though it didn't start that way).

Reducing the graphics settings had no effect, and as I said the GPU usage is low on both machines. We have the same graphics card.

Reducing the game speed significantly (0.5) alleviates the issue but doesn't remove it.

my debug options are included. I don't have access to his, but having gone through them at length, none of his are different by a ridiculous amount. His sleep time is very low, that's the biggest difference. Everything else is 10-20% higher across the board.

This is happening intermittently but consistently. It happens every time he joins the game when I host, but sometimes calms down and he gets up to above 40fps. It seems to come back.

mods folder: https://drive.google.com/open?id=1xHWsj ... ia7sjn3lsc

save file: https://drive.google.com/open?id=181bM7 ... W8jQRTufW4

debug options: https://imgur.com/a0RwtHN


Edit: updated with way more images, bot his pc and mine: https://imgur.com/a/J5ltnE9

The issue happens when lots of machines are running nearby. If the factory is still, no issues

[Loewchen]

Post the screenshot actually showing the issue and with the game in fullscreen.

[Venator]

Updated with new images