Hi, Cristina. It looks like you're referring to the second example mentioned here, right? https://github.com/mathworks-robotics/designing-robot-manipulator-algorithms
I just tried it and, on my computer, it runs smoothly.
Make sure to download the whole repository, either through Git or by downloading a zip file with a copy of all the files, since there are dependencies between them.
The first thing you will need to do is run the 'startupExample.m' script. Was it maybe then that your computer started running slow?
If that's the case...
- Make sure to install Git from https://git-scm.com/ since the script will use it to clone another GitHub repository (https://github.com/ROBOTIS-GIT/open_manipulator) upon which these examples are based.
- Check your internet connection. It could be that it takes a while for all the files to download.
I hope that helps. I'm an engineer at the Academic Group at MathWorks, where I liaison with academics in Portugal and Spain and I'd love to help you further.
Até breve!
