why does my foundation do this?

i use a primer and start with my face clean and moisturized. i use the nars natural radiant longwear foundation, shape tape concealer and set with a pressed powder (it looks even worse if i use a loose one). does anyone know how to stop this from happening? i have combo skin and 2 hours after applying, no matter the weather/humidity

conditions, my foundation is incredibly oily, slippery and separated. it does this particularly around my nose and chin area.