The page file is a private system file placed in your system drive. Windows recognize some of the data from RAM to the page file on your hard drive when your RAW is full. Thus, this virtual memory allows your computer to run more efficiently by easing the workload of the physical memory, RAM. By improving the page file size, you can probably optimize your Windows 10 computer's startup time.
Let's see how to increase the Page File Size in Windows 10, and for the same, you need to follow as mentioned:
Step 1. In the search bar, type advanced system and choose the settings "View advanced system".
Step 2. Now, under Advanced, press "Settings" in the "Performance" section.
Step 3. Go to the "Advanced" tab and choose "Change".
Step 4. Later uncheck "Automatically manage paging file size for all drives" and click "Custom size".
Step 5. After then, set the Initial size and Maximum size.
Step 6. Click "Set as OK" and then restart your computer.