Battery drainer... – Defenders 2: Tower Defense CCG Review

I love playing this game but have 1 major gripe: it drains my ipad pro like crazy. I play with the cable in the mains. If not, I go from 100 percent charged to zero percent in an hour of play. Is this a known bug? I do realize that the graphics are splendid and there is a lot going on, but still.... any clues?
Review by flooziewoozie on Defenders 2: Tower Defense CCG.