Note 4 Problems!

I have a galaxy note 4 on sprint. When I first got the phone, it ran great. I love the long battery life and multitasking abilities. However, I've noticed recently that it seems to be running slower. I'm on stock, unrooted firmware and I've only had the phone about six months. When I first got the phone, battery life was excellent. I only seemed to lose about ten percent battery for an hour of normal use (screen on, low/moderate processor use). Now I lose about twice that. I also downloaded the AnTuTu benchmark test and ran it. When I first did this with this same phone six months ago, I achieved a score of around 50,000 but I ran the test again last night and scored 27,000. I had a friend run the test on his note 4, also about six months old, and he scored about 50,000. I also cannot connect to a Bose Soundlink Bluetooth speaker that I used to have no problems with (still with same note 4 unit) and I had to factory reset my android wear watch to get it to connect to my phone, another issue I've never had. On top of that, I can no longer get the phone to vibrate with the arrival of a text message. It will give a notification and sound, but no vibrate. These issues are frustrating, especially as the phone is only around six months old. Any help with this stuff would be greatly appreciated. Thanks!