The Widi Thru6 BT from CME is a midi splitter with the added bonus of BLE Bluetooth Midi... but is it worth buying? Here is the definitive test and review.
@mirandazohran I have used a group of 3 without any problems but I don't know your setup, so you may be using midi very differently to me. A few things you might want to check... Bluetooth interference, turn off Bluetooth on any mobile phones or other devices close by. USB port, try a different USB port on your computer, make sure USB sleep mode is switched off. Close any other programs on your computer and set your computer to performance mode (this stops any background services from causing issues). Check that Midi Thru has been turned off on all midi devices connected by Widi (this stops any possibility of creating a midi loop... A midi loop can end up sending thousands of midi messages around and around, causing the midi connection to slow down and malfunction).