Which tool to remove voice crackle in audio?

The crackle is due to skipping: intermittently tiny pieces (~1ms) are missing, (audio intermittently interrupted by another process on the computer), this usually causes discontinuity, which is the click/crackle …

There is a DeClicker plugin for Audacity which will repair the clicks, but it can’t put back the missing parts, so not a cure …

DeClicker settings used.png