Process recipes is not consistent, output images with random res / Impossible to set ISO aspect ratio

hello and thanks in advance for your help and support !

I have only recently discovered the "process recipes" tool which I consider amazing, tho I have so far two little problems I can't solve:

1. I have to resample my photos to a given res / ratio. When I crop the photo the res showed is correct (let's say 7200x5400) but when I export a batch some file will have this exact res some will have for exp. 7201x5399 or similar, just randomly. The only thing so far I can do is to go back to the particular photo, just drag around the crop tool a bit, put it back where i need and hope it will come out with the right res. And this is slowing down incredibly my workflow.

2. One of the ratio I need to work with is the ISO ratio (A papersize, A1, A2+) which I can't set. The exact ratio is 1:1.41421+ (square root of 2) and if I manually insert it, in the crop tool, it will not lock with an output given exact resolution (7016x4960 A2 res) but will stay most of the time 7014x4960.

Thanks again, I hope it is possible to do something about it, especially the first issue.

Have a good day, Andrea