I just want to note here that all the articles I have read about the "Gaming Mode" state that those who have higher end PC's should enable this with caution. It seems this is more geared towards PC's in the lower to mid range.
In our tests, we found that Game Mode didn't have a huge impact on higher-end systems, but if you're prone to multi-tasking or have lots of processes running in the background, Game Mode could be useful to you. Additionally, Microsoft has plans to improve the feature in subsequent updates, so it's at least worth knowing where it is.
Here's how to enable (and disable) Game Mode in Windows 10.
Read How - Click Here.