Alpha Client Lag

Whenever I use the new client, I get huge ping spikes randomly in game. I usually ride at 25-26, but when I use the new client, it can spike to 700 ms and make the game completely unplayable. The client seems to remain open even though the game is playing for no reason, and when the client is closed, the game runs perfectly. I have conducted numerous tests with different programs open, and even with legacy client, and it is indeed the client that is the problem.

Computer specs are not the problem, GTX 970, i7-4790K, very strong ethernet connection.