Ground loop, wireless mic out of range, or bad cable is my first though but I have not seen it.
Maybe I am wrong I though you could get audio out over USB natively on the X32? That seems like the way to go versus digitizing an output from your mains or an aux.
Did this problem just start or was something changed / installed and now you have a problem?
Try some easy things first:
---You mention the wireless mic. Has that always been plugged into the board before the problems? If you think it is suspect try unplugging it from the board completely and also unplugging it. Test your sound with a wired mic / instrument etc to see if the static goes away.
---Disconnect all outputs from the board and monitor from headphones only. Does the static go away? If so plug things back in one at a time. Make sure things are powered/turned down that will pop if plugged in hot. Start with any aux outs then end with your mains until you find the culprit.
---If the static is still there do the same thing with inputs. You can either have them all unplugged and plug in one at a time or all plugged in and unplug one thing at a time.
If it persists the it is could be common devices like the X32, but not the most likely thing to fail.
Lots of churches are having hiccups because of the sudden change to streaming try Reddit for advice too --
https://www.reddit.com/r/churchtech/