JFO Tutorial: How to enable the UE4 Developer Console
Section #1: Installing the Console Unlocker
Download the Universal Unreal Engine 4 Console Unlocker and extract it somewhere.
1, Launch the game first and once you are in the main menu ALT-TAB out and launch the Console Unlocker.
2, Select StarWarsJediFallenOrder.exe from the process list and the DLL to inject if it's not detected by the tool.
3, Click Inject DLL:

4, The process takes a few seconds and when it's done, you'll get a message and another command line window will pop up - this will show some additional information, including some console commands and hotkeys.
5, Now return to the game and press ~ to open the console.
Notes: Using English keyboard layout was the only way I could make it work. So change your KB layout to English before launching the game or use the Input.ini mod file that remaps the Console key to Tab if you have issues.
If everything went well, the Console should appear at the bottom of the screen:

Section #2: Using the Console and making changes
It's simple: just enter the command and press enter. Press the console key again to expand the window and display the results.
A list of all console commands can be found here: Unreal Engine 4 Console Variables and Commands
Change FOV, Rendering Resolution, FPS limit, Sharpening:
Notes: Recommended to not go too high on FOV since it will affect the cutscenes as well.

Motion Blur, Depth of Field, Bloom, Anti-Aliasing, Anisotropic Filtering:

Improve TAA quality:
r.TemporalAACurrentFrameWeight 0.1
r.TemporalAASamples 4
Section #3: Combining commands:
You can speed this up by combining your commands and saving them in a text file, then just copy paste them to the console.
Use | to separate the commands - Example:
fov 60 | t.MaxFPS 75 | r.BloomQuality 0 | r.MotionBlurQuality 0 | r.DepthOfFieldQuality 0 | r.ScreenPercentage 130 | r.MaxAnisotropy 16 | r.CAS.Sharpen 0.8

8 comments
Someone please have access to an older version of the unlocker?
EDIT: use v3.0.13.. v3.0.14 will crash your game