Very long processing time

Couple of our Studio instances are taking literally 30 mins to start the process - Like validation 10 mins, from validation to start process log 10 mins and after that 10 mins to run the actual process and just one small change and test taking 1 hour.
Any ways to find out why or any ways to fix this?

I have also noticed longer boot times for Studio. Not 10 minutes necessarily, but maybe 2 minutes, vs. only 20 seconds in the past.