QUOTE:"""
I can pretty much confirm this on an X220i, I have sort of come to terms with it, but it is definitely noticeable (in chromium and firefox).
X220 here.
"""
This problem is NOT specific to this model or any other machine (as far as I
experienced).
This issue was present on a few towers and still is on an Intel/Asus{1} based
machine.
You can try debugging FireFox or Chromium with gdb(1).
{1} No dmesg, not on this machine at the moment.
