A lot of rejected share of "low difficulty share"
**Describe the bug**
Get a lot of rejected share "low-difficulty share" on different platform and different pool.
4800H with win11

in Rog Phone5, it get rejected share in very high frequency.
![image](https://user-images.githubusercontent.com/59680068/143729370-ea79e87c-0446-4500-bf42-e45c50ee6786.png)


**To Reproduce**
I don't actually know how to reproduce it.
I just run xmrig and this problem jump out.

**Expected behavior**
No rejected share of "low difficulty share" or in more low frequency.

**Required data**
tested platform: 
* Rog Phone5 with ubuntu on termux
* 5950x with win10
* 2673v3 with ubuntu20.04
* 2600E with win10
* 12700K with win11

tested version:
O meet this problem
△ in lower frequency, but also meet this problem
X doesn't meet this problem

* dev branch:
    * self complied with msvc (O)
    * self complied with gcc9.3.0 (△)
    * self complied with gcc10.3.0 (O)
* master brach:
    * self complied with gcc9.3.0 (△)
    * official binary for ubuntu 20.04 (O)
    * official binary for windows (△)

**Additional context**
My friends also meet this problem on different hardware or platform, so I think this is not a single case.

