Opus 4.6 seems to have stopped real considerate thinking "outside peak-hours"

Anthropic has been doubling usage outside our peak hours for the next two weeks. This morning hours (CET, outside peak hours), Claude (Opus 4.6 Extended Thinking) was however seriously problematic to use: it kept doing really silly mistakes in code and data interpretation, I needed to point out every single thing individually and it kept on jumping to lazy conclusions and solutions. That's not normal at all ime - it's like it stopped thinking all together. Anyone with that experience? Because if that's the case, at least I know when to NOT ask serious tasks from Claude the next two weeks (or switch the API all together)