iPhone 15 control panel lag

guys I’ve been using an iPhone 15 for like 2 and a half weeks now and I’ve started noticing a lag that happens with the control panel. When I pull the upper right corner of the screen, the control panels animation is laggy and feels like its 10-20 fps. I also noticed that this happens only when the charge is below 80%. When it’s 100%, the lag doesn’t occur, but once it drops below 80%, boom, it lags again. I don’t know what the problem is, I tried going back to iOS 17.7, the lag still happened but less frequently. I suspect that this happened because the restriction of battery charging. See, now in settings one can restrict the battery charging so that it never charges more than a value that was restricted. I used to restrict that battery charging to 80%. Maybe the phone somehow adapted to that, throttled the processor and that’s why the animation lags? I don’t know what to do, is there any way I can get rid of that lag?