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The link you provided, I don't see duplicate titles anywhere on that page, did you resolve that issue?
I also don't see your Slider on every page... if you're loading it as a Particle then only the single Outline where that Particle resides can be assigned to the given page. If you're loading it as a Joomla Module then the screen shot you showed looked correct.
SEARCH the forum first! These boards are rich in knowledge and vast in topics. This includes searching just the 'Solved' forums, using Google, and using ChatGPT