Drastic change in script runtime

I have some code that runs a GWAS analysis for a computational biology course on Posit.cloud. In past years it would run in 30-40 minutes, but in the same project, the same version of R, etc. it is now taking over 10 hours. Have there been some hardware change that would cause this?

It only take about 30 minutes on my laptop!

I suggest that if you want to ask a question about Posit.cloud, then you add the corresponding tag to your post, to make sure that people working on Posit.cloud will see it.

Thanks for comment. I've narrowed it down to the way glm is working. I created a new thread with the correct tags.