Replacing files on Android arduous

[Bird]

I only use FreeFileSync to synchronize MP3-files from my PC to my Android phone, one way.

That works. But replacing files, because of some changed properties, that has always been very arduous. It gets stuck on those files for a very long time, before performing the actions and moving on.

Best practise for me is to remove the files by hand, after just doing the compare which enables me to identify them. Then synchronize, which boils down to copying new files (including the removed ones).

I don't know where the problem stems from, it might just be Android. But I imagine this should not be a real problem.

[Plerry]

Can't help you with some crappy Android/MTP implementations, but ...

Best practise for me is to remove the files by hand, after just doing the compare which enables me to identify them.

By hand? Use FFS!
Run your Compare, and then only show the files to be replaced (the green arrow-icon, mid below the Compare results) and not show the files to be added (the green arrow-icon with a plus-sign, mid below the Compare results), then select all visible right(target)-side files, and right-click on any of those and select Delete. Then rerun your Compare and then Sync.

[Bird]

That's about the same as what I described to be doing, using FFS.
And it's besides the point.

It's too easy to say it's 'crappy' Android. This has been the reality on 2 phones of 2 brands.
So 'maybe' concentrate on a possible flaw in FFS, which is still the question.

[xCSxXenon]

I'm guessing it depends on the phone and how the storage protocols are implemented. I have no issues with large amounts of updates on my Note 10+