In terms of the settings “not working well” was it that the movies appeared a bit of an odd dimension? - did you get the same error of not seeing the image/movie until you adjusted the size of your browser window?
I got the same error as what I have explained in both settings.
It is good that you have tried using another project,
Sorry, my explanation lacks some pieces of information.
The test experiment is the same project from which I got the error. I tested it with a small number of files uploaded before the other files were uploaded there. In that time, the experiment worked without any problem in Chrome.
After I sent the previous reply, I made another project including a small number of files again and tested the new experiment, but I got the same error in this time.
I tried the experiment in other browsers (Microsoft Edge, Firefox), but the results did not change.