1, Hit start menu and type "Defender", it should bring up "Windows Defender settings" entry, so open it.
2, Another juicy part - if you use another AV software, like for example in my case - ESET, then you would naturally assume everything Defender related is disabled, and you would be wrong. If you use Defender, you will be brought to the Windows Defender Security Center straight away, but if you don't, you will end up on a Settings page saying that Windows Defender is not available because it's turned off. Click "Turn on Windows Defender Antivirus" - don't worry, your AV software will disable it again straight away.
3, Once you are in Windows Defender Security Center, Click App & browser control button
4, Scroll all the way down, to Exploit protection, and click Exploit protection settings text
5, Once on Exploit protection page, set Control flow guard (CFG) to OFF.
6, It will prompt you to restart your PC
7, After the restart, enjoy your smooth Windows experience again
8, Curse Microsoft for the rest of your life and be very skeptical about new feature updates.
Hope it helps!