Extreme, location-specific lag

This realm currently only has 2 players. There is extreme lag at my main base/build project, making the game unplayable. This lag looks like not being able to sleep in a bed, chests opening very late(sometimes opening minutes after I clicked them), mobs not moving, broken items disappearing and not dropping. On that last item, when the game is reloaded the broken blocks return as if they were never broken. When I leave my base area, the game runs smoothly. The other player on my realm has tried helping me break problematic blocks such as lanterns, candles, hoppers, etc., but that doesn't do very much to help the issue. I play on MCPE, and my other player is on a PS5, he experiences the lag issue just as bad as I do. I do not have any large mob farms or anything like that, so we are both at a loss as to what the issue could be.