This test only pull pre-build static tile. Tile is really fast, almost no waiting time.
https://transparentgov.net:3200/googlemaps120/default?layer_id=0&layer=Protected+Areas+Database+of+the+United+States+%28PAD-US%29+v3.0¢er_lat=36.94539306054984¢er_long=-101.45028509167086¢er_zoom=4&url=https%3A%2F%2Fgis.usgs.gov%2Fpadus%2Frest%2Fservices%2Fpadus3%2FManager_Type%2FMapServer&overlayType=overlayType_tile&panto=0
https://transparentgov.net/json2tree/esri/server2/folder.html?url=https%3A%2F%2Fgis.usgs.gov%2Fpadus%2Frest%2Fservices&org=USGS+Protected+Areas+PAD%2C%26nbsp%3B%26nbsp%3B&cross=default&timeout=10000&select_folder=11&select_layer=0