No we were all shooting in the same mode, here is what I have noticed when I was using
95MB/s memory card the shutter had a unique sound to it, like a mechanical sound to it, I posted that when I first
got the EOS R camera. But when I switched to the 300MB/s it sounds so much smoother and responds much faster when
pushing the shutter button.
FYI - I just received a UHS II card 150 Mb/s, and tried it out with my R. Really weird, but I also noticed a difference in the shutter sound as well. I was using a UHS I 95 Mb/s card and the shutter definitely had a distinct clunky sound. With the new card it's noticeably quieter and smoother. Not sure about it responding faster. Have to put it through some real use first.