Performance issue in Matlab r2025b

Hello,

Today, I decided to update matlab to r2025b (I have been using r2023b since it was released).

First impressions were not good, the first thing I did is to configure the behavior of figures to be the same as in previous releases (to open everytime in the same position and with the default size). I think that opening figures with the size and position of the last figure is not very practical (maybe yes for some users, not at all for me).

Then, another disappointment with the files explorer...now I can not see on a glance if a folder is empty, I have to expand the arrow beside to check it :(, and the symbol next to the csv files is not anymore the excel logo. I know they are not really important topics but I was very used to the previous GUI and seems dificult to get used to the new one.

Anyway, progress is always good so lets give it a chance...

But finally, and the reason of this question, I start running a code that goes trough all the csv files in a folder (lets say 20 files), plots around 60 figures for each file (lots of figures in the end) and saves them, along with some .mat files. I have been using this code with r2023b for long time, it takes some time of course, but with r2025b I would say it takes like x3 or x4 times longer. Any clue if this can be solved?

I still want to give another chance to this release but...doesn't seem very promising. Good thing I didn't started migrating my Simulink models to this version :)

Best regards!

[Paul]

Did you try a tool like the profiler in 2023b and 2025b to try to identify where the differences are in execution time?

Intresting point about Simulink. There have been many complaints about Matlab r2025 on this forum, but I don't recall seeing any about Simulink.

[Dyuman Joshi]

Just a FYI - This is not the platform to give feedback regarding MATLAB, this is a Q&A platform supported by volunteers focusing on the programming side of the queries.

If you want to give feedback to TMW regarding their products, go through here -

Contact Support > Product Support > Enhancement Suggestions.

@Paul, Simscape (which is a part of Simulink) has had a major news in R2025, i.e. the removal of SPS without any prior notice. That should count as something, right?

[Guillermo Rubio]

@Paul Thanks for the hint, I will do it to gather more info and see which part of the code causes the difference. Maybe I did not explain myself perfectly regarding simulink, I have not had any issue (yet), just commenting that I will wait to start using simulink 2025 until I figure out if matlab 2025 works fine for me.

@Dyuman Joshi you are right, sorry for the additional comments, I was trying to give some feedback but, you are right, this is not the place.

[Dyuman Joshi]

@Guillermo Rubio, the reason I mentioned it is because your feedbacks here won't lead to any upgrades/changes; though we will welcome the discussion - offering suggestions/workarounds/comments (as Paul has done) or mentioning information relevant to the topic (as Star Strider has done).

Nevertheless, the best option for you to pass on your feedbacks is to directly contact TMW as I have mentioned above.

[Guillermo Rubio]

Thanks again @Dyuman Joshi, I will also pass send my feedback to TMW as you mentioned above.

Kind regards,

[Guillermo Rubio]

Just if anyone had curiosity, I have used the profiler to measure the execution time with both versions:

r2023b:

r2025b:

Seems that savefig is one of the main causes of the time increment.

Pd: In r2025b, the profile does not generates the report properly, leaving a blank page after the table column names.