That sounds about right. But even with the small degradation, any SSD is still very fast. I myself do not worry about that very much. Whether my boot time is 18 sec or 25 sec - who cares. I picked boot time because that is the easiest to get accurate data.
I found the article link.
AnandTech - Exploring the Relationship Between Spare Area and Performance Consistency in Modern SSDs
Funny thing is I turned off Hibernation to save 28 gigabytes of disk space and my computer actually boots in about the same amount of time, and it shuts down a lot faster.
I guess it makes sense that it shuts down faster, it doesn't have to spend time storing all that stuff.
My boot times have gone up a lot from when I first installed Windows 10, back then it took about 15 seconds, now it's up to about a minute.
It wakes from sleep pretty much instantly still.
yea i noticed that windows 10 boots slower, not 10 minutes but still a unnecessary black screen pause for 10 seconds then boot
With Windows, some things never change, there is still a totally redundant 30 sec, boot delay programmed into the OS.
Kill that with this little tweak.
Shorten the Boot Time in XP, Vista & Windows 7, 8, 8.1 and 10
Go to the start button, choose run, then type msconfig and press Ok.
On the system configuration window, choose the "Boot.INI" tab.
Check “No Gui Boot”, then lower the timeout to a more manageable time.
I choose 3 seconds in stead of 30. (windows won’t accept a lower number than 3)
Next choose advanced options.
This is where you can choose how many processors you have.
Most modern PC's are duo core (2 processors) with some quad core (4 processors)
then choose OK. The Windows default is only 1 core.
Now choose apply and OK, reboot and you should see a marked decrease in boot time, and an Increase in Run-Time efficiency.
Don's have a start button? Get to your task manager and click on File. Then RUN a new task. Type in MSCONFIG (yes, it's still there). Then follow the tweak above.
I've tried that "No GUI Boot" previously, but I didn't notice any speed increase.
I'm still getting about 30 second delay with black screen from start of the boot to sign in screen, after it goes as fast as HDD and startup programs would allow it. All told, 45 seconds from button press to usable state. In the mean time, about 10 seconds for update check and OneDrive synchronization.