ghostrider algo uses more CPU than expected
**Describe the bug**
CPU usage is significantly higher than what I specified in the config file when using ghostrider algo.

**To Reproduce**
Put this as the setting for ghostrider in the config file: (generated from an appropriate initial "cpu-max-threads-hint")
```
"ghostrider": [
            [8, 0]
        ]
```

**Expected behavior**
The miner's CPU usage should be very close to 1

**Required data**
![image](https://user-images.githubusercontent.com/81028826/149614431-2ef1c7ca-3804-4fce-9854-b7703c04e034.png)
CPU usage of the miner is significantly higher than 1: 
![image](https://user-images.githubusercontent.com/81028826/149614468-084e3c3d-75f0-4f2a-85b3-c012cac62dff.png)
![image](https://user-images.githubusercontent.com/81028826/149614457-a366d082-0154-4478-91f9-dfa4e60e30ff.png)

 - OS: Linux

