Ask HN: Is Claude Code less useful in recent weeks for you?

In the past couple of weeks, I've found Claude Code much harder to work with. It seems to not understand well-known (eg for me, .Net) libraries as well as it should, and I have had to download the library source from github and instruct it to read the library to know how to use it; it does not follow instructions as well; it frequently assures me something is fixed but sometimes has forgotten a key portion; and it frequently ignores its memory: for example, it commits even with a stored memory instruction to never commit without me verifying it first. It's starting to be a real time drag and I am not getting the productivity I did even a short time ago. Is anyone else seeing this?