It came to my attention that the maximum resolution of the pictures is 2048px width when I download the pictures. As it is likely to assume that Mapillary reduces all pictures to that size anyway, it would be much faster to upload pictures with resizing them before. Are you ok with that?
Even though you can only download 2048 px as the highest resolution, it is still worth uploading higher quality if possible - namely it enables better processing of the images. However, if you’re in a situation where connection is bad etc. then it’s fine to downscale of course. So it’s up to you in the end.