It is highly recommended to install the patch after installing the base game as some of the levels can encounter some softlock issues with saves created on the base game once you load them on the patched version of the game
To check the game’s version go to the settings and look in the lower right corner of the screen
Your game should be in version 1.17.38829.471
Splashscreens when launching the game are stutterring
The Portal VFX can sometimes not play in the level "The Deep Vault" in Chapter