iOS 15 Has Just Hurt My iPhone 7

Well everyone, I've been doing so many gaming videos on my third YouTube channel, and I’ve been using a lot of my older iPhones to game on, and I realized that the performance of my iPhone 7 has gone down significantly from iOS 15.2 to iOS 15.3. Personally, whenever I play these heavier intensive games, I always do it on the same device, I also use the same exact settings as well, and you can actually see a pretty big difference between the gameplay, here is a video of this if you want to see for yourself:

Now, this is a common issue I’ve come across with many different iPhones, as it gets more updates, the phone begins to slow down a little bit, it’s not a crazy big deal, but it is something to keep in mind. Interestingly enough, my iPhone 6S seems to have kept the same performance as before, meaning, that iPhone didn’t seem to slow down with this update, nor did my iPhone 7 Plus, so it’s strange that this specific iPhone experienced that performance drop.