I'd agree that's worth a go.
I've never seen indexing use that much as viewed in the task manager.. about the only time I've known of it using significant resources is when there's something amiss with the file system, or corrupt files.
Given that, there's no guarantee that an in-place upgrade repair will solve the problem, as the data files you're indexing won't be affected.
I would suggest that you then try indexing only a small and specific part of your target files to see if that completes, and then extend it. That way you can then identify if there are particular files or folders that are problematic - i.e. possibly damaged or corrupt.
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It sounds as if you are unfamiliar with booting to Safe Mode, assuming your Recovery environment is intact.
There are several ways to to this.
Safe Mode: from the Tutorials section (did you check there?)
This tutorial will show you how to boot Windows 11 into normal mode, Safe Mode, Safe Mode with Networking, or Safe Mode with Command Prompt. Safe mode starts Windows in a basic state, using a limited set of files and drivers. If a problem doesn't happen in safe mode, this means that default...
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Note: a good starting point is to SHIFT left click a restart option.
(Hint: blue text is clickable and may open another tutorial e.g.
Boot to
Advanced Startup)
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See if indexing completes,
If not:
Reset and search indexing:
Again from Tutorials:
This tutorial will show you how to manually reset and rebuild the search index for accurate search results in Windows 11. Indexing the content of your PC helps you get faster results when your searching it for files, emails, or other local content. The search index only includes your selected...
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- note the range of tutorials linked below the main text.
Limiting and setting what is indexed:
Start with
This tutorial will show you how to manually add or remove locations to be excluded or included in the search index in Windows 11. Search Indexing in Windows improves the speed and efficiency of searches by creating an index of files and their properties on your device. This index allows Windows...
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and choose Classic.
Then use
Indexing Options
(e.g. Taskbar search, Index ....)
Click C:, Modify, look for highlighted items in Indexed Locations dialogue, expand Users and deselect to limit what's indexed, noting what you've deselected.
When you have a limited number selected, note the number of items indexed shown in the first dialogue (Indexing Options)
This tutorial will show you how to manually add or remove locations to be excluded or included in the search index in Windows 11. Search Indexing in Windows improves the speed and efficiency of searches by creating an index of files and their properties on your device. This index allows Windows...
www.elevenforum.com
Note what your task manager shows, then close it and leave it a few minutes and then check the number of items indexed and compare with previous.
If indexing completes, reselect another folder or 2 and repeat.
See if it gets stuck anywhere.