[MC-132870] Weird lag with large amounts of entities in 1.13 compared to 1.12.2

in 1.12.2 my computer could run the singleplayer world i was playing without having any delay when opening chests, accessing furnaces or activating the elytra however 1.13-pre6 there is a noticeable delay and more general server type lag where the frame rate is not affected but interacting with the world is delayed

edit:
tested again in 1.13 full release and made a more clear video showing the problem/bug
and the worlds in the video are different worlds so i dont think the bug is caused by upgrading the world
https://www.youtube.com/watch?v=9y5wWDiQiTc

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Comments 8

[Bot] Arisa 2018-07-06T10:02:45Z

Please do not mark unreleased versions as affected.
You don't have access to them yet.

kumasasa 2018-07-06T10:06:29Z

Can you please attach screenshots of 1.12.2 and 1.13-pre with debug screen (F3) enabled?

Macash 2018-07-06T10:18:55Z

i show my debug screen in the video as well

kumasasa 2018-07-06T10:23:26Z

~~yes, but cannot play the video (most probably on my end...)~~
The video cannot be played.

Macash 2018-07-06T10:25:30Z

Macash 2018-07-06T10:41:42Z

it may be because its private but ive changed it to public now

SergeantTom 2018-07-19T23:08:42Z

i have the same issue too, my world has delays on many things. I am playing on 1.13

-fps is not affected

-very noticeable delay

-pressure plates take very long to reset

-food takes very long to eat

-other players rubberband

-can't activate elytra

-mobs move very slowly

Macash 2018-08-08T15:45:34Z

this bug seems to be fixed in 18w32a so i dont know if i should keep this bug report up