Oodle experiences the same thing, as an example oo2core_6_win64.dll from FIFA 19 game doesn't inflate good as the one you find from WWE 2K19 I think. (Which means the developers compressed the game using a different dll and then shipped the game with another dll)
oo2core_
6_win64.dll has variants on its own, you just need to check the change log, oo = denotes oodle, 2 denotes version 2, that 6 is the sub version. When checking the change log. You have something like 2.6.#.
From the change log, there was 2.6.0, 2.6.1, 2.6.2, 2.6.3.
Things to check in the change log is things related to better compression or improved speed.
"Mermaid, Kraken & Leviathan decompress faster by 5-10%" as an example.
These improvements are what affect xtool from being able to precompress streams because the recompressed stream is much different from before.
You can find the change log here.
http://www.radgametools.com/oodlehist.htm
Mostly the library that comes with game usually works though.