I have the same behavior as you, the whole Dpad is detected as Axis 5, I am on 4.27.2. I am very worried at first and thinking what’s wrong with this Raw Input plugin. However, I don’t think this is an “issue” now and I am started to think what if the “correct” information @DarknessFX gave is wrong? I am saying this because I use the XInputChecker in DS4 Windows to check my DS4 input. In the XInputChecker, the LS X and Y axis are separate channels which is same as Raw Input. The Dpad however is one channel and the output it gave is one of these: centered, up, upright, right, downright, down, downleft, left, upleft. This makes sense for Raw Input to put the whole Dpad as axis 5. You can also check these Dpad output values in showdebug.
My conclusion is that below information @DarknessFX gave is not correct:
Dpad V - Axis 5
Dpad H - Axis 6
Instead, Raw Input maps the whole Dpad to axis 5.