Does the second slot work well enough for it to function? I have a back to back sessions over the next month and don't really have time to send it off to Canon yet. Right now it's working ok with a handful of cards, but worried it will give out on ...
I started having this same exact issue this week with my R6 mark I. Did you ever come to a conclusion or a solution for 128 GB cards? Did all new cards work?
