Why is it we can't shoot H.265 D-Log in quick shot mode???

It’s a too big work the the mavic cpu to both record in dlog and auto pilot the drone

Hi, thank you for bringing this query to us. The Quickshot mode on the DJI Mavic 2 Pro is an autonomous flight mode and it has default settings and resolution. Therefore, you cannot use the H.265 D-Log on the specific flight mode since it is not supported. Hope this helps. Thank you for your continued support!