The Titan Two is an adapter which lets you use alternative controllers on different platforms, along with many other things. For instance, if an Xbox controller (check the Titan Two website for compatibility) is more suitable for you, you could use the adapter to use your preferred controller on a PlayStation 4 console.
When using the adapter on certain consoles, it is important to create a wired connection for it to work reliably. To use a Titan Two on a PlayStation 4 you will need to Use USB Controller as the Communication Method. This post shows how to do this in the PlayStation 4 settings.
To get there go to Settings > Devices > Controllers > Communication Method > Use USB Cable
The screen shots below show this process:
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