My iPhone 16Pro keeps lagging and experiencing different problems after installing iOS 26.5.2

My iPhone 16Pro keeps lagging and experiencing different problems after installing iOS 26.5.2,

The problems occur especially when connected to a charger. The phone restarts several times on a single charge. Sometimes it disconnects from iMessage and FaceTime, it can't open or close programs, the screen freezes. I made several forced restarts, but it keeps happening almost every time I plug the charger in (it is the original cable with the original fast charger). Has anyone experienced the same? Is there a fix, or is the update bad?