What coin do you mine, what video card do you have?
What software do you use?
What OS do you have? What's your hash rate?
We cannot guess these parameters.
Describe your computer configuration
I'm mining ethereum with 4x gtx1660super
I'm using Nbminer software
Running on windows 10 OS and getting 31MH per gpu
Spec of my PC is core i3 2nd gen with 4gig RAM stick
Close all applications and browsers.
With an open browser, the AMD Athlon X2 processor is loaded by 30-70%. If my browser is closed, it turns out 4-20%.
Did you download the miner from the developers github or from a third-party site?
NBMiner v36.1, GPU Miner for ETH, CFX, RVN, GRIN, BEAM,
https://bitcointalk.org/index.php?topic=5099379.0Alt+CTRL+DEL -> Windows Task Manager