User can follow steps below to reduce the high memory usage consumed by Internet Explorer.
(1) In Internet options, On the General Tab click Tabs button and unchecked the option "Show Previews for individual tabs in the task bar".
(2) Go to the "Advanced" tab in "Internet Options" and checked "Use software rendering instead of GPU rendering".
(3) Try deleting Temporary Internet Files and cookies.
(4) Temporarily disable all the add on and turn on them one by one and check the consumed memory every time. If you find any add on consume high memory, then remove it from IE.
(5) Try to set a light weight Homepage.
(6) Try to create a less tabs and check in Task manager whether consumed memory is less or high as before.
(7) Try to check whether there is any memory leaks or issue caused by a faulty update.
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