The Windows 10 November update was quite minor and only brought some bug fixes and performance improvements. However, it also introduced several bugs into Explorer and generally worsened its performance.
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Now it has become known that the corporation will begin to seriously address this issue after the holidays. That is, it will take a few more days to deploy the update. And this is not counting the actual development and testing.
At one time, Brandon LeBlanc said that the Explorer problem was not a priority, and also noted that it would be dealt with only after the end of the holidays.
It's unclear when the fixes will be released to endpoints, but you can expect them to be available in late January.
Source: 3dnews.ru