I've been waiting for 5.8GHz from Xvive for a long time and it's finally worth the wait.
The delay is not noticeable. I didn't have any problems using it during the performance.
There was no need to recharge during the 4-5 hours rehearsal.
If your phone is connected to a 5.8GHz Wi-Fi network, do not hold it close to the receiver. There's a possibility of interference or noise.
The smart channel scanner feature is very useful. In the venues I go to, I press the scan button on the receiver. It finds the clearest channel in 7-8 seconds.
Thanks Xvive.