I would say, if you want Win10 to run nice & fast, stop fiddling with it.
Dont install apps you dont REALLY 100% need. Keep it clean & with as few apps as possible loading on startup .

Also, dont install Winzip (since you mentioned it) . Its just bloatware now .
10's build in zip support if OK for most.
For RAR's , then install Winrar (if needed) .

You could install Malwarebytes , but set it to NOT load on startup . Just run it manually when you want to scan something

Got the startup menu sorted with the registry edit :)
Does anyone have the classic theme on Firefox working (or know where I can get it)?
Note this is for Firefox Quantum 59.0.1 (32 bit) - am I using the right version?

firefox latest is 59.0.2.

under add-on's  on the left is themes.

I use All Fall by MaDonna from the personalize section.

Hmm might have to look into that one. Cheers

I've found a copy of Windows Live Mail 2012. I can't seem to import my Outlook Express 6 messages into it however - it gives an error that "either the folder is empty or being used by another program" (neither of which are true). Any suggestions? I could use Outlook but I'd prefer to keep my two POP mailboxes separate (if possible).

if you search in google you will find the classic theme is a lost cause in windows 10 so I had just shown alternatives.

Outlook express 6 can be transferred to Mozilla Thunderbird mail .

I use it for gmail and Outlook mail .

look here  https://www.google.com/search?client=firefox-b-ab&ei=R1q7WtSSO8yb8wXVzZzwBg&q=outlook+express+6+export+thunderbird&oq=outlook+express+6+transfer+to+thunderbird&gs_l=psy-ab.1.0.0i22i30k1.32136.46524.0.51358.24.24.0.0.0.0.328.6220.2-22j1.23.0....0...1.1.64.psy-ab..1.23.6200...0j0i13i30k1j0i8i13i30k1.0.9ViT3R3SKnU

New issue:
I purchased a WD Blue 4TB drive today to replacing my aging other WD ones. Connected it up using my cradle (which I tested the other day on this machine so I know it works) but it's not appearing in Disk Management. However, Device Manager shows it as an "Unknown USB Device (Device Descriptor Request Failed)". If I power off the cradle, this disappears; turning it back on it reappears, so I know it's probably the hard drive.
Tried updating the driver, apparently there are (somehow) "no new drivers" for this device. Tried uninstalling and rebooting, but the issue is still there.
Any ideas? Do I need to take it back to the shop, or is this a Windows 10 (or driver) problem?

32bit hardware only supports  a maximum of  2TB HDDs

I was referring to the 32bit enclosures being limited to 2TB by address limitations.

Windows 10 64bit is a bit hazy but says 16TB max for the machine including internal and external obviously needing a 64bit interface. Hopefully someone can explain it better.