system
A chat on subreddit /r/pcmasterrace
human
Bluetooth is alright, though you may as well use the wireless receivers that are included with most wireless peripherals instead, that way you get as close to wired latency as possible (bluetooth will have more sporadic performance).
gpt
Also certain things interfere with Bluetooth in my personal experience.  


I have titanium accessories inside me from being hit by a truck previously. They block Bluetooth signals depending on how I am oriented.