Why is ping constantly spiking throughout an entire game?

My ping keeps spiking up constantly from 23 MS to 500 MS and everywhere inbetween constantly throughout a game. It started happening yesterday and it has been in each of my games since and my games are literally unplayable because there is like a 4 second delay to everything. Is there a problem with the servers that anyone else is having or does anyone know what causes these issues or how to fix them? Everything was working fine and then there was some update on the client and ever since then it has been terrible.
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