I tried to update my world from 1.13.2 to all the Pre-Releases but every time i do, the world get really laggy in singleplayer.

Chunks doesn't load, commands doesn't work, etc.

When i checked the logs i saw this warning many times but with different numbers:

"Can't keep up! Is the server overloaded? Running 2001ms or 40 ticks behind"

I tried everything and i still get this issue and also the world is barely loaded so it's not a heavy map.

I also got this error with new worlds created directly on the snapshot.

I tried the same on different computers and on a server and it's still happens.