Possibly a Stylocoeniella, maybe a Space Jam or Looney Tunes. Possibly a lepto, though the spots look more like individual polyps (stylo) rather than small pools (lepto).
If it is a stylo - it's an encrusting SPS that does well with decently high PAR (200-350) and strong flow, though it might need lower flow than usual to recover from its current state.