uhh im not sure abt this but i normally have f3 already on when i enter so i just wait for entity counter to spike up (this makes it so zombie pigs arent randomly on your bastions) and like if it doesnt load for 20s i pause for like half a second and turn around, idk ive never gotten zombie pigs while doing this so idk lol, i just go until the ent dist mob cap is filled.