It has literally been benchmarked by people with the result that it made it worse. What's more, the subjective experiences of countless people simply can't be just ignored because at a certain point what started out as subjective becomes an actual statistic when it involves that many people producing the exact same result over and over.
Honestly they're wasting their time regardless. Even assuming they're actually right and somehow all those people who have tested both ways are all somehow every single one of them wrong, no one is going to believe them. Putting aside that logically it makes absolutely no sense for a super extreme over-the-top DRM mechanism designed to be super hard to crack by using lots of methods that the CPU must perform on the fly to somehow not, you know, take some of that CPU's performance away in the process (ok, it's really more of a latency thing, but the point stands,) even if they say "oh, we can prove it doesn't, look, we did benchmarks and our tests show it does not" absolutely no one will believe them. Not the actual gamers, and no, not even the devs. And publishers just simply don't care one way or the other. So in the end, this really has no effect and is a waste of time.
I want to say I hope they waste a lot of money on this pointlessness, but honestly, that cost gets passed on to us, so mostly I hope they just drop this as fast as possible and give up pretending to be that which they are not.