Thanks for reporting. 
This article is on the blog for a long time.
Troubleshooting Tip: “Enable drift correction”
For macOS users who also use an aggregate audio device → LINK
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I discovered this last week while trying to get a clean audio signal back into GP from my iPad. Once I enabled Drift Correction…problem gone!
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Q: Moving one slider also move one other slider. They are not in any widget group. How can that be?
A: Both sliders are assigned to the same parameter! 
(solution)
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A High CPU issue. One of the culprits is a driver.
I had a CPU high usage issue with the latest ASIO on UMC204HD (Behringer) audio interface. As soon as I roll back to the older version the high CPU usage has gone. It seems the latest driver possibly causing an issue with the audio interface. I am using GP4 on Windows 10.
(source)
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