Cumulative Update KB4512508 Windows 10 v1903 build 18362.295 - Aug. 13 Win Update

RK1997 said:

This can be a hit or a miss, but those who are not able to install this CU may try to do it again but with Fast Startup disabled. The thread here states that it can interfere with updates. I had it disabled 2 weeks ago and have been able to install the updates offered to me in that duration.

Yes, very valid point. I've had that feature disabled for years. It does not give me any benefits what so ever when enabled, but it has given me a lot of grief. Disabling FastStartup is one of the first things I suggest people disable if updates fail or the system is misbehaving.

RK1997 said:

It made a BSOD occur while I was playing PUBG PC Lite. After disabling it, not a single BSOD since the 2 weeks I mentioned. Also turning on core isolation prevents PUBG PC Lite to even start from its launcher.

Yes, it sometimes causes some form of memory corruption, which in turn leads to BSODs.

slicendice said:

Yes, very valid point. I've had that feature disabled for years. It does not give me any benefits what so ever when enabled, but it has given me a lot of grief. Disabling FastStartup is one of the first things I suggest people disable if updates fail or the system is misbehaving.

Fast startup is a performance-enhancing feature, useful mostly for systems booting from a spinner (hard disk). It doesn't add much to modern ssd disks, so it is advisable to be disabled.

ddelo said:

Fast startup is a performance-enhancing feature, useful mostly for systems booting from a spinner (hard disk). It doesn't add much to modern ssd disks, so it is advisable to be disabled.

Yep, I don't understand why it's enabled by default on SSD systems. Makes no sense to me.

Optane systems utilise an NVME SSD with super low latency to accelerate mechanical HDD read access (works extremely well), however it seems to work even better if you disable fast startup (current BIOS to Desktop is 6.2 seconds with a 7200Rpm drive).
Also the Intel SSD toolbox app has a optimise section, I have superfetch disabled on my system (because I decided there is no point using system memory to do basically the same job Optane was doing) and the optimise section states no changes needed superfetch disabled...green tick.
I have a feeling that anyone using an SSD to boot Windows would be ok to disable superfetch as well without seeing a noticeable decrease in performance.

slicendice said:

Yep, I don't understand why it's enabled by default on SSD systems. Makes no sense to me.

Because nobody from the MS geniuses took the time to write a simple routine to check if the OS is booting from an SSD...and disable it by default! They're busy with new features, for which they will make a new marketing video, to make more money to Microsoft!

ddelo said:

Because nobody from the MS geniuses took the time to write a simple routine to check if the OS is booting from an SSD...and disable it by default! They're busy with new features, for which they will make a new marketing video, to make more money to Microsoft!

I think you're right!

ThrashZone said:

Fast start yeah is one feature I wish ms would stop with they just dig deeper and deeper and cause more pain than needed and use that to eol older processors.

Sorry to say that, but that's the main Marketing idea:
EoL the old CPU, so they (the "suckers") will buy a new PC, with a modern CPU, new video card, new WiFi, new audio chip, so everybody will make money out of it (the OEM, intel/amd, nVidia, Realtek, Broadcom etc.), plus we (Microsoft) will sell a new Windows license, since the last one, as OEM, was only valid for the old PC and is not usable anymore!!