Just installed, so hard to say. Probably need much more time to see how it is working, but it seems fine. I also uninstalled Facebook and Facebook messenger as it appears to slow down my phone at the moment. Phone not running hot, at least not more so than after any update.
I use Nova and this seems to be fine. No apparent changes in performance good or bad overall. There are one or two very slight changes to the appearance of the OS, such as the current apps screen now having my home screen background on it. Aside from that nothing to really let me know that I am on Marshmallow.
But I suppose we were expecting that. Smart Notice still doesn't work properly when I switched to the LG Home. It downloaded a weather theme but can't see any changes to weather widget.
Will update as I explore more, and on performance.
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