it might help if you advised your location (city/state) and ISP.
A cable connection to a router/modem will be faster than a wifi one, due to the overhead of running the wifi.
Try using speedtest.net to check your speed.
Ask your neighbours with similar installation as yours to do same. This will give you a guide what speed is available at your location.
An old router can slow things down.
Good Luck - Keep us posted.