What kernel are you using, and have you customized any of it's settings with something like Kernel Auditor? Perhaps setting your background memory killer stricter or limiting thermal settings somewhat might help you. While the phone can get hot, I have not had major lagging or heat issues under XPower 5 with AndroPlus v40 (do NOT use anything higher with this ROM)
I'll try to add the support for it
Yeah it is kcal!