To use large pages (2-4MB) pages you specifically need to give your user the "lock pages in memory" privilege using Local Security Policy.
Note: at this time, Windows Home, Starter versions do not suppport changing privileges thus this feature cannot be enabled through "official means". We cannot advise you of "alternative means".
For Windows Professional, Enterprise, Ultimate or Server:
Please see this article on how large pages and TLBs affect memory latency and memory bandwidth:
Measuring Latency Performance
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