Autosave lags chunk generation, mobs, building/mining, damage given/received, players don't render in real-time. Autosave is caused by the player when chunks are being rendered, meaning 1 player traveling can cause the entire world to lag and be nearly unplayable. I heard disable autosave was coming and that was after Bedrock Edition released months ago. Autosave needs fixed AND disable autosave needs added.