1st: what is your ping normally, it could be high because of your distance
2ndly: make sure u are not downloading stuff
If not sometimes your ISP can be running maintanence which can last up to a week, to make sure it is maintanence, do a hard reset on your modem and router, and if possible do a software reset aswell (by going to 192.168.1.1 or 192.168.0.1 and hitting restart), if problems persist, and the issue is happening on other computers aswell, then its most likely maintanence.