I suggest you test your hard drive speed at first:
Step 1: Right click Task Bar on the bottom of your screen, and choose "Task Manager" in the extended menu.
Step 2: In the pop out windows, you will see different tabs on the top, click "Performance".
Step 3: Choose the hard drive on the left column, and you will see the results of read and write speeds.
If the speed is slower than the average, please defrag your disk (HDD) or make 4k alignment (SSD).
Also, does you C drive or the drive where you install your windows is running out of space? If yes, please do cleanup disk or move some unnecessary files to another drive (like D or E drive).
All these solutions can be realized by AOMEI Partition Assistant, maybe you can have a try.