i found that all my farms that included mobs would be almost 10x faster if i set my render distance to 10 or above, luckily im able to keep it on render distance 10 because 1.13.1 is much more optimized, good job mojang! but anyway i work in the ocean and now that i have my render distance to 10 loads more drowns are spawning.
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However, this issue is a Duplicate of MC-2536.
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