I've checked that if I try to set a Filter widget for a certain 500K feature service layer from ArcGIS Server, it consumes a lot of time for requesting the attributes to be showed within the dropable bar (4 - 6minutes):
I'd like to know if there is any possibility to have it loaded differently than getting the information from the feature requests:
One of the requests (from FireFox console):
Should I make any modifications within the layer parameters or something? I'm a bit lost here...
Thanks in advance!