The following problem I found in version 1.14.4 is the following:

When updating a world from 1.12.2 to 1.14.4 a type of delay is generated when crossing a chunk to another according to the rendering distance, the smaller the greater the peaks.

In the following video you can see how they are generated, I hope this problem is solved for future versions.

(The problem is also presented in snapshot versions 1.15)

Video: https://www.youtube.com/watch?v=op-X7WO4RQ0