When I change the region filter, sometimes results change and sometimes they do not (no problem here), my problem is that because of the loading times after changing a filter setting I'm not sure if the results haven't changed because both regions serve the same results or if they haven't changed, because the filter hasn't loaded yet.
Having a loading bar or something whenever you change a filter setting, would greatly help with UX. I'm thinking of something like the red load bar on youtube for example:
