I hope you are well today and thank you for your question.
I have tested it on my test site using Header 10 layout and setting a large logo image which increases the size of the header to fit the image which is obvious.
In your case, you are displaying the slider below the header and set the header as transparent therefore the resized header occupies more space on the slider.
To resolve this, you can either restrict the height of the logo in the theme header settings or do not display slider behind the header.