Some of the projects in Rstudio are taking ages to start and are then (when it startet) often slow, taking ages vor simple operations, like mean(some_data). I did switch off the analysing part of RStudio, so it does not analyse much, I did cleared the environment, I never save the Workspaces, and still, some projects, especially bigger ones with lots of files involved are painfully slow. I also thought that it might be due to the cloud location, but after copying files to the computer locally and offline, it did not significantly improve the starting speed. One more thing: when RStudie finally launches and is slow, my computers CPU is high and ventilation starts to "scream". Interestingly other, often smaller, projects have no problem starting and working.
What could be the problem and how could this issue be fixed.