Quic = TCP inside UDP and its great for e.g. streaming, instead of sending a bunch of Acks all the time it tells the other side which packet to resend in case of loss. Great for a buffered Video stream.
Personally, the bigger impact on user experience is all tha Javascript crap. My banking website changed to an infinite scrolling page for transactions and the user experience was ruined as a result. Static content scrolls way faster.