After two days of monitoring my Windows 8.1, I confirm that the high memory usage issue described in my previous posts (here and here) is fixed.

Here is the poolmon screen shot when the high memory usage happened:

This is the poolmon screen shot right after updating network adapters to fix the issue:

This is the screen shot one day after the fix:

And this is poolmon screen shot today, two days after the fix:

The screen shots after the fix show that the pool usage is very stable and didn’t show any process with high memory usage. So I feel confident to say that my issue has been successfully fixed.