windows 10 – Youtube responds super slow to keyboard shortcuts, but it responds fast to mouse commands

I just did a fresh install of Win10 on a new SSD. Everything is running fine, but Youtube, for some reason, when I use the keyboard to pause, raise the volume, skip forward or back, takes around 500/700ms to respond, making my video viewing experience bothersome.

What could I test to troubleshoot this? This happens on all browsers (tested on Firefox, Chrome and Edge (though it’s chromium)).

I’ve resorted to downloading the videos and watching them on MPC-HC or VLC.