So when using WP Smush Pro on a site and testing the speed

So when using WP Smush Pro on a site and testing the speed at google insights dl speed checker, it is actually decreasing my speed by 16 digits! I was getting a 63/100 rating, I installed and ran smuch and now its a 47/100. I disable smush and its back in teh 60s. Is this plugin working at all?

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