Has the nerfing started for Opus 5.5?

I'm using Claude Code all day in my job, previously when they nerf a model I only notice it when I get bogged down. I'm flying along and then one day i just get stuck on everything, mainly coding but could be anything. This evening I just noticed opus 5.5 going back and forth on reviews, every review introduced more issues to resolve across multiple turns. Im seeing hints of opus 5, but maybe the nerfing this time will be slower, like boiling a frog. And yes I'm definitely paranoid, and my benchmarks are anecdotal. 5.5 has been amazing, not ready for the nerfing which has happened consistently since 4.6