Same issue here. I agree with Owen approx every 10 minutes it freezes 30-45 seconds. Definitely correlated with autosave. I've noticed more general lag than usual as well e.g. initial world loading, traveling between dimensions, chunk loading, settings UI launch, and occasionally block updates e.g. placing a block takes a couple of seconds to render after the block is placed.
Switch, 1.18.30, local single player, Simulation 4, Render 12, survival
Same issue here. I agree with Owen approx every 10 minutes it freezes 30-45 seconds. Definitely correlated with autosave. I've noticed more general lag than usual as well e.g. initial world loading, traveling between dimensions, chunk loading, settings UI launch, and occasionally block updates e.g. placing a block takes a couple of seconds to render after the block is placed.
Switch, 1.18.30, local single player, Simulation 4, Render 12, survival