Three By Three: Twin Fours Sudoku but harder!

Today's Video:

I don't know about this puzzle. Either it's quite a difficult one, or I made it difficult for myself!

Regardless it's a joy to solve and exercises your brain in new ways with it's new variant ruleset.

Can you solve it?

Link to Play:

Three by Three by Matt Tressel https://tinyurl.com/SudokuSleuthThreeByThree

Rules:

Place the digits from 1-9 in the grid so that they do not repeat in any row or column. Digits can (and will) repeat in each 3x3 box. Each box will use exactly 3 of the digits from 1-9.

Standard XV, kropki, and arrow rules apply:

Digits separated by a 'V' must sum to 5. Digits separated by an 'X' must sum to 10. Digits separated by a white dot are consecutive. Digits separated by a black dot are in a 1:2 ratio. Digits along an arrow line sum to the digit in the attached circle.