Seat 6 is the button
Seat 1: Player1 ( €125.25 EUR ) - VPIP: 70, PFR: 19, 3B: 0, AF: 1,8, Hands: 53
Seat 4: Hero ( €67.48 EUR )
Seat 5: Player5 ( €92.36 EUR ) - VPIP: 35, PFR: 2, 3B: 1, AF: 0,7, Hands: 890
Seat 6: Player6 ( €137.62 EUR ) - VPIP: 32, PFR: 23, 3B: 13, AF: 3,2, Hands: 340
Player1 posts small blind [€0.25 EUR].
Hero posts big blind [€0.50 EUR].
** Dealing down cards **
Dealt to Hero [  3s 5s Ac As ]
Player5 calls [€0.50 EUR]
Player6 raises [€2.25 EUR]
Player1 calls [€2.00 EUR]

UTG limps, Button (strong reg) raises, SB calls

My first instinct is to raise pot. Button will always call me, and probably at least one of the other players will call.

Button loves to play 3-bet pots in position against me. Should I go with my first instinct to raise pot, or is it better to call and play a smaller pot OOP against a strong reg?