Constant Stuttering

Hello, Recently built this pc with the following specs: GTX 1660, Ryzen 7 2700, 16GB ram, MSI B450M Mortar, Seasonic Psu 520w, SSD 240GB. I noticed that I get a lot of stuttering while playing video games. Temperatures while gaming are as follows: GPU - 80 degrees and CPU - 50 degrees. the...