Definitely not an expert in BT but I've worked with it on the edges. Bluetooth is the biggest standard I've ever worked with by far in just terms of sheer page

Definitely not an expert in BT but I've worked with it on the edges. Bluetooth is the biggest standard I've ever worked with by far in just terms of sheer page count, to say nothing of its complexity. That's just the core spec, not any of the other pieces you need too to make it do useful work. I would not believe the 20ms number without real world performance benchmarks tested in operational conditions for my specific product but if that is what is actually happening, I suspect something with the implementation on the specific platform is to blame - again, the standard is ridiculously complex and hard to implement. It's notoriously bad on android (by bad I mean a dumpster fire) and while windows is actually been making progress, depending on the SoC of the physical adapter your experience can range from great to near android level dumpster fire.