It seems that some Windows computers are generally laggy with no good reason. I could recommend installing Old Calculator. https://winaero.com/get-calculator-

It seems that some Windows computers are generally laggy with no good reason. I could recommend installing Old Calculator. https://winaero.com/get-calculator-from-windows-8-and-windows-7-in-windows-10/ https://winaero.com/get-calculator-from-windows-8-and-window... It was a little difficult setting it up so that the calculator key on the keyboard pulls it up but aside from that it works well.