I bought a Logitech Bluetooth K380 keyboard recently for my pi top 4 and was disappointed with the performance. It was virtually unworkable as the keys constant repeated. I adjusted keyboard settings in pi-top OS for key repeat delay etc. but it didn’t work.
After speaking to a friend he suggested re-flashing the OS as he’s seen other OS related issues that had been fixed by a re-flash, and I’m pleased to say it worked.
My pi-top OS was up to date as far as it could be so I’m not sure why it’s now working, but very pleased it is.