Very hot on cm12.1/based roms!

Hello everyone! I have strange problem.. on any cm12.1/based rom my z1c is very hot, about 53°C. So i can't use for example resurrectionremix 5.1. On stock is better, but not good. Then also about 40°C. What can I do? Only xperia care? :(

Really sory for my english.. hope you understood me..

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