I have a script containing ~1500 lines that I run in sections as each section produces a different plot. If I run from scratch after clearing everything, each section runs as expected, taking 20-30 seconds each. However, if I make any change (e.g. something as small as changing the colours in a plot), it then gets stuck. Rather than taking 20-30 seconds, a section could take over 2 minutes. I realised this was occuring specifically after making changes, so I started running single lines of code to see what was happening. I would enter something simple like x=1; into the command window and this would take a minute or two to complete (which obviously is ridiculous). However, once I had done this, it was as if it had reset, and everything then started running normally again - until I made another change.
I've tried shutting Matlab down and restarting the computer, but the problem persists. It has been like this for about a month now, I've got into a habbit of typing x=1; into the command window after every change I make so I know whether Matlab is ready for me to run the actual script again. Sometimes it isn't too bad, and will only take about 10 seconds, but other times I can be waiting for 5 minutes.
For extra context, this only happens when I am working on scripts that use a fair bit of memory. The one I mention in this example reads in ~500mb of data and also does MCMC analysis with ~200,000 samples.
