Editing with any playback-only format like AAC or H.264/5 is a pain. Everyone I've seen complaining about slow choppy playback in DaVinci Resolve appears to be

Editing with any playback-only format like AAC or H.264/5 is a pain. Everyone I've seen complaining about slow choppy playback in DaVinci Resolve appears to be using long-GOP codecs which require a massive amount of processing to decode. It's something like playing out two seconds of video to access every single frame.