Had a world with severe lag, assumed it was due to placing command blocks for teleporting purposes, but it also lags in a brand new world. I have "Show Autosave Icon" selected but it still doesnt show the icon ever, but it lags out at regular intervals, so I assume its when the game is autosaving. When I save and quit, it takes a long time to save there as well.

Players on Xbox in my world also experience the lag spikes.