xmrig 6.16
**Describe the bug**
on my system start at 16k - 17k but in few minutes drop to 9k, or sometiome to 600 h/s. this is the behavior on version 6.15 too.
for example, with xmrig 6.10 this don't happend.

**To Reproduce**
i only let them run.

**Expected behavior**
what i expect is to stay at same  rate all the tiem (16k to 17k)

**Required data**

 - Config file or command line (without wallets):xmrig.exe -o xmr-eu1.nanopool.org:14433 -u wallet.worker/e-mail--tls --coin monero --cpu-priority 0
 - win 10 pro last updets 

