Yeah I don't have any performance issues either really, just the heat. And it's not just Google apps. Extended use of Opera or the Hub has the same effect. Makes no sense to me as the phone isn't metal and doesn't have the most beastly processor on the market. It has to be software related, which is why I feel Marshmallow may solve most the heating issue. It doesn't bother me that much, but it shouldn't be happening. The Nexus 6P doesn't have this issue, nor the iPhone 6S/Plus, so hopefully BB fixes it sooner rather than later.