Dino , the page you linked to seems dodgy, why not link directly to youtube?
WARNING the site ahead was reported to spread intrusive software.

Dave  –  Last year  –  このコメントは役に立ちましたか？ はい | いいえ (+15)

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An SSD is not as fragile as some people think. I have a laptop computer with a 120gb SSD that is now 8 years old. The SSD has 21,144 hours on it. I over-provisioned it in the beginning to use only 94% of the capacity. I Trim the SSD on occasion. Definitely NO defrag. I have 2 Linux and 1 Windows operating systems installed. I use the "sleep" function on my main OS. The SSD health according to SMART is still perfect.

Tech  –  Last year  –  このコメントは役に立ちましたか？ はい | いいえ (+14)

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"Can we please have some objecctive assessment of this Software to really assist decision making either way?"

WinSysClean X11 PRO & similar are fine to try as long as you've got a good, recent, disk / partition image backup that *you know you can restore* to put things back in the rare case it's necessary. [That part about knowing you can restore the backup is pretty important, as I've found several backup app USB sticks that will not work with UEFI & Secure Boot, e.g AOMEI, EaseUS etc.]

If your having a problem with Windows, WinSysClean X11 PRO **may** help -- you may decide it's worth a shot since there's very little you can do besides running a Windows Troubleshooter, which in my experience usually just wastes your time. Windows Is Not self-repairing. Windows version upgrades requiring a reinstall can usually repair Windows & help by clearing away a Lot of clutter, but it's uncertain if Win10 will see any more of those. You can perform a repair reinstall of Windows, though it doesn't seem to clear out as much leftover junk as upgrading. Windows does have a System File Checker tool, but I've never seen it help with Win10/11.

zdnet[.]com/article/the-ultimate-windows-troubleshooting-trick/

windowscentral[.]com/how-use-sfc-scannow-command-fix-problems-windows-10

Most repair attempts & alleged performance boosts rely on WinSysClean X11 PRO cleaning the registry, which generally amounts to clearing known caches & deleting entries with broken links to missing files &/or registry entries that do not exist. Logically that should not ever cause any problems, but software can contain legacy code that checks for & requires certain registry entries that no longer serve any purpose, so deleting them can break stuff. Logically it likewise shouldn't fix anything either -- a broken link shouldn't do anything because it's broken -- but some people report using a registry cleaner fixed their problem. The smaller the registry's physical size, the better, since it has to be read or parsed, but it takes deleting a Huge number of entries to make a real difference, so WinSysClean X11 PRO is *probably* not going to make a big difference in this respect.

WinSysClean X11 PRO can clean up a lot of junk files Windows & your software leave behind. Windows has Disk Cleanup & Storage Sense, which can help, but neither will get everything, & while WinSysClean X11 PRO does a better job, it won't always get everything either. There's just too much junk left behind. While a bunch of files, each taking up 1MB or less won't matter, you can easily accumulate 5-10GB, or more. And that can be a bigger problem than you think, because while you may have plenty of space left on an SSD, performance decreases, sometimes dramatically, if you exceed 50% of its capacity.

Regarding some comments concerning SSDs...
By default Windows will optimize hard disks & SSDs on a schedule -- it's best not to turn that off, as Microsoft has found SSDs need an occasional defrag to keep Windows performing optimally. Otherwise optimizing SSDs will run a TRIM function, supplementing the TRIM that's likely also run by the SSD's firmware automatically.

Most all hard disks / SSDs record some data concerning their status & performance that you can access using something like Crystal Disk Info, a free app that reads data stored in a drive's S.M.A.R.T. registers. What's recorded & how varies by make & model. Pay attention to past & current temperatures, as both conventional hard disks & SSDs can suffer degraded performance etc. if temps get too high. SSDs can have quite a bit of variation in both their design & the components used, and that goes a long way towards determining their theoretical lifespan & warranty duration. Their recorded S.M.A.R.T. data normally includes some indication of remaining *theoretical* life expectancy / remaining warranty, though how that info is reported also varies... where one drive might show a steady decrease in life remaining, another may drop 1% on day one, then stay at 99% for however long, or it may show 100% forever because the SSD's designers never bothered to make that register active. And that does reflect *theoretical* lifespan -- an SSD can fail at 100% or last years after it reaches 1%.

mike  –  Last year  –  このコメントは役に立ちましたか？ はい | いいえ (+11)

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