Earlier quoted context omitted.
I've had pretty good luck with phones and most things (audio has various codec mismatches if you're going for high quality, but that's all at least visible on boxes), but not computers and [nearly anything except HID]. HID works great everywhere, and battery life is amazing , I love bluetooth for HID. Bluetooth headsets and computers seems like a special kind of flaky-hell. I tried ~8 modern high-end headsets on 4 la…
That's weird. I've had pretty much the reverse experience. My Sony and Shure headphones have always worked perfectly (even on Linux!), but I've had issues with a keyboard and mouse not reconnecting after they went to sleep (computer stayed fully on), or at least taking forever. However, I was surprised by how little lag the mouse had compared to its regular wireless (Logitech unifying).
Every headset I've used with SBC selected has worked perfectly, including some ancient cheap ones, and I'm pretty sure that's how things are connecting to my car (which always works).
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For mice, I dunno. I've had consistently good results, and I primarily use logitechs. My wife recently swapped out an ancient one that worked perfectly with a AA that lasted 3+ months for a modern one that... also works perfectly with an AA that lasts for 1-3 months. Similar results for keyboards, I primarily use a chonky wired one and I can't feel any difference when I use bluetooth ones.
If I did feel lag, it'd be an weird and I'd probably immediately return it. So I do tend to stick with one for a long time, and haven't tried many.
I've never done objective latency tests, but they feel fine to me. No noticeable lag compared to wired, which is plenty good for me. RF dongles do at least make pairing a non-issue though, just plug and go (which I LOVE about Apple laptops + keyboard/trackpad, plugging it in sets up the bluetooth pairing).