Your computer's bluetooth module could be the source of the trouble. Some people have found that using a different dongle fixed their wireless controller problems.
That makes sense. I've had the most issues on my old Dell XPS and a dongle would be annoying on such a small laptop
Are you sure? Bluetooth dongles these days can be smaller than most low-profile USB drives, barely protruding from a laptop's exterior. It might be worth browsing the available models.