Is there a way to optimize adding custom columns

[vvyoko]

I implemented an aspect ratio column with reference to spacefree
Specifically, take the values ​​of the first box and the second box
and then divide them

Normal browsing is fine
But when clicking and sorting it will be stuck for a long time
Currently 2670 files take more than 1 minute

1,I took a look at the CustomSort function
It requires all items to be added to the array first
This causes it to not be sorted step by step like other built-in attributes (it won't get stuck in the whole process)

2,2, I need to get the value in the third box when sorting.
But the ExtendedProperty function doesn't seem to be able to directly get the value in this box
As a result, I have to repeatedly get the values ​​in the first and second boxes and calculate.
Is there any function that will allow me to directly get the value in the third box