I've seen the same issues on multiple versions of macOS (as old as Monterey, but up to and including Ventura). I currently have an i9 MacBook Pro with 32G of RAM, and HLC is slow just clicking an arrow to increment or decrement a value. It used to be that the option for avoiding many update calculations made things faster; currently it seems to have little or no effect. The iPad version is fine — it has other problems, but speed isn't one of them.
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