In this hand in the BIG 22 the pot goes 5way, where the original raiser (UTG+1 - 27/19 55 hands) is a recreational player, MP2 & CO and are recreational players

BTN is (23/25 ~187 hands) REG'gish player.

How do you approach this flop and why?

Flop is wet and the recreational players bets <50% pot, making it very conceivable that BTN is raising (small) with the majority of his overcards, weakish flushdraws just to exploit the openers cbet.

TPWK doesnt seem that terrible given the spot?

wonder whats optimal here, since in game i just 'auto-folded' which is likely not the best option

Thanks in advance.