I have never once had it work for me. Usually it feels like the model got a lobotomy. If I'm working with the model in a chat interface, I feel like we only really start to groove around 500k or so, at which point it knows my quirks and style, and is interpreting my intent correctly. That never, in my experience, survives compaction.

Maybe things are better now. It's been a while since I've compacted a conversation.