I'm not sure what it is about this Pi 400 keyboard, but I end up with many typing errors I have never made on other systems. I've been struggling with this for months now, and haven't been able to track it down. It looks like it may be software lag missing inputs. I suspect this as I will actively type with extra force to ensure I pressed the key down fully. It usually doesn't bother me, but there are times where I am just not in the mood for it. I hate that I can't trust my keyboard and that doubt gets in the way all of the time. I've already made multiple typing mistakes on this log, while watching my typing. Still not sure what is causing this. It may be the nerve damage to my hands from my last job, maybe that I've been away from the keyboard for a while, might be that I just suck. I doubt it's a recent change though, as it has always been an issue. Probably a combination of software, hardware, and user error. The system is still quite usable, especially for the price. Seeing as the Pi 400 is about the only Pi you can actually get  these days, it makes an excellent Pi. I've got a few IBM Model M keyboards waiting on restoration that might eventually get an embedded Pi CM4, assuming I can actually get the modules and time to do it. For now, this will have to do.