Found this on Geekhack.org - Sadly the stabilizers for the bigger keys (Shift, Enter, Backspace) do not feel quite as solid. Pressing those keys hard enough on one side will make the keycap flex quite a bit. While with normal typing you are unlikely to ever notice this it will definitely be noticed on some hardcore gaming session with hectic key-presses. A Korean tape trick
can fix this problem if it really gets too bad.