I just wanted to post a workaround I found for a freezeup in RStudio.
Today I added a while loop into an RMarkdown file and ran it, unfortunately I forgot to add the incrementer i<-i+1. Life seemed to take a turn for the worse from there.
RStudio did not seem to want to do anything afterwards. I kept shutting it down and Ending the process in Task Manager; I also tried Session --> Restart R. Even still Qt Qtwebengineprocess kept gobbling up a huge amount of CPU (70% of my computer's total). I was very unsure what to do.
Then I thought: "Why not simply run --> prefetch and run --> %temp% to clear these out?". Bingo! Surprisingly as soon as I did this RStudio started working perfectly right away. Of course, before running the while statement again I decided to add in i<-i+1.
Hopefully, this will be helpful to others who might need some ideas if their RStudio freezes.