MacBook Air Bluetooth keeps disconnecting

My MacBookAir bluetooth keeps disconnecting from my sound devices (UE sound systems). It does that with the 2 devices I have.

I have tried all the possible things to do (disconnect and reconnect, update software, fully charge the devices, etc.) but it keeps disconnecting every few minutes. It did not used to do that before. And also, my devices do not disconnect when I connect it to my iPhone, only with my computer, so the problem must be with the bluetooth on my computer.

Any advice? Thanks in advance!