(sorry if I have some mistakes since my PS is in Spanish) I can't work with the liquify effect with the face aware tool because I need more hardware. It says to check the option of "using a graphic processor". It has it active and detective, I have a AMD Radeon(TM) RX Vega 10 Graphics according to the program. The other options in the liquify effect work.
This is the notification, doesn't matter which photo or face angle I use, it doesn't work.