thanks everyone for suggestions. my base is near seas so we already had ditch and walls around ( ibb.co/D9j8b42 ibb.co/HKvnFzk ibb.co/K6Dnf0x )

last time we got raided by few trolls which dealt great damage to out defenses so I thought doing this ( ibb.co/hKGTVRB ) could nerf trolls :D

placing trophy really tanks down fps but it's still 70fps+ for now, hope devs working on optimizations