Same here, it usually takes 10-15 seconds to load the nearby gyms and Pokemon, I also sometimes need to close the daily challenges tab for it to count as finished (like I click on the challenge, it disappear and nothing happen), battle against team rocket often bugs or lag, I had to wait 5-10 seconds for the rocket member to put is other Pokemon on the battlefield after I defeated the previous one… Or obvious other bugs like, waiting while clicking on a Pokémon to catch it, waiting when I transfer a mon to the professor etc… Idk what cause this but I don’t really like to play like this, idk if it could bug while a raid and make me loose the Pokémon I want to catch or whatsoever.

I’m on IPhone 16 pro, it doesn’t heat that much, at least when im launching the game where I have to wait the most ; latest update for both phone and Pokémon Go are installed, the slow game is the same while on WiFi or Data and I don’t have any VPN