Hi @Oliver_Boinx. As per your recommendation, I reduced the Dell XPS 13 resolution to 1080p. Now, it seems to me that my MacBook Pro 13 is handling the recording properly. I still didn’t have time to test that new setup extensively, but the 5 minutes I recorded are okay. Thanks for the hint.
Anyway, Isn’t it strange that Blackmagic Media Express is able to record 4K UHD while mimoLive is not?