I only bought the controller, i don't have a ps4.I assume you have a PS4 if you're using a DS4, does it work fine there?
When i sit where i want to sit, InputMapper start crying for god's sake that the latency is high, When i come closer the messages disappear, i get farther, the same problem, i turn off the wifi/internet connection so that if anything interferes it's gotta be something wireless, but same latency problems.If not, keep in mind that it might not just be your BT adapter on your laptop, it's possible there's heavy interference happening somewhere wherever you're gaming. Take your laptop elsewhere, like a bathroom or something more isolated, and see if you still have the same problem.
Thanks.