Another look into the left Joy-Con connectivity issues, could be hardware-related

Much has been made of syncing issues with Switch’s Joy-Con controllers, particularly with the left one. Spawn Wave looked into the situation with a pair of new videos.

Opening the left Joy-Con circuitry shows that the antennae used for Bluetooth is actually built into the board. Meanwhile, the right controller has an external wired antennae. Interference could be involved with the left Joy-Con resulting in connectivity problems.

Spawn Wave explains the situation towards the end of the first video below. In the second one, a wire is added inside to boost the Bluetooth signal, and the results are very successful.