Freezing While Typing

[ardamavi]

Bug Description

Usually when I write 5 lines, it freezes and my writing is shown late in screen, and it continue working after ~one second until some more typing and it freezes again.
I have been using Atom with "autocomplete-plus" package for a very long time, this is the first time I have encountered this problem.
I updated Atom to 1.51.0 because of this problem, but it didn't fix (I don't remember which version I was using before).
I just have freezing problem when "autocomplete-plus" package is enabled.

Versions

My OS: macOS 10.15.7

Atom : 1.51.0
Electron: 5.0.13
Chrome : 73.0.3683.121
Node : 12.0.0

apm 2.5.0
npm 6.14.5
node 10.20.1 x64
atom 1.51.0
python 3.6.8
git 2.24.3