Windows 10: DNS Client load CPU in case of big hosts file

After installing Fall Creators Update (KB4058043, KB4057247, KB4055237, KB4055994) on Windows 10 Pro 1709 (16299.125) I noticed a long delay in the opening of websites.

Symptoms

• The DNS Client service load is about 25% CPU.
• You can't open any website and get access to the internet at all for several minutes.

Microsoft Office: How to fix double slash autocorrection in links

Some applications (web servers, etc.) support hyperlinks with double-slash (//) after specifying the protocol (http://, ftp://, etc.).
IBM Lotus Domino is such an application. A link "notes://server/1111111111//2222222222/" is correct.

During the migration from the IBM Lotus Domino mail system to Microsoft Exchange, it turned out that all Microsoft Office applications (Outlook in particular) correct links (even in incoming emails) with two empty slashes "//" for a single slash "/" automatically. We failed to find a solution in the Internet to change this behavior.