R version 4.1.0 runs extremely slowly inside RStudio version 1.4.1717 on M1 Mac

R version 4.1.0 Patched (2021-05-23 r80364) is blazing fast on my M1 iMac, but it slows to a crawl with RStudio version 1.4.1717 "Juliet Rose" (df86b69e, 2021-05-24). Any trouble shooting suggestions?

Try this:
PSA: R 4.1.0 release requires RStudio Preview - RStudio IDE - RStudio Community

Since you are using a daily build superior to the preview version that is supposed to be R 4.1.0 compatible, I recommend you to file an issue on the GitHub repository (if there isn't a related one already).

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