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Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@Gordon
Thanks for testing that! Ok, so then it's exactly the issue described in https://forum.espruino.com/conversations/387281/
So enabling Throttle Send in the Web IDE communication settings should fix it I think.
But at this point I'd be pretty certain this is a bug in whatever Windows 11 Bluetooth Driver you're using I'm afraid. It's probably not a coincidence that this change to Espruino went in over 3 years ago and nobody had any problems until about a month or two back.
I wonder if you all have the same Bluetooth radio in your PCs? If you have a look in Device Manager, what does it say?
Maybe trying to get the absolute latest driver would fix it?