Sly 4 Sixaxis (STEAMDECK)

I've reached a certain part in SLY 4 which requires the use of a Sixaxis controller. So I switched from my Xbox Series controller to my PS4 Dualshock, however, even though the controller itself is working perfectly with no other issues, it's still not registering the Sixaxis. Does anyone know a fix for this?

Using the most up to date version of RPCS3 and got the most recent version of the PS3 BIOS so everything should be working

What are your pad settings with DualShock 4? You need to use the DualShock 4 handler for the SIXAXIS to work.