ChatGPT is getting slower. Is it just me, or is it my devices?

I feel like when I first started using ChatGPT, it was faster and smarter. Now it takes a long time even for simple things. In the video I posted, it takes 3–4 seconds just to give a basic answer.

I also have videos of it taking minutes to do very simple calculations, like applying an hourly rate to a number of hours (around 17–18 hours). It’s something I could easily do myself with a calculator in a few seconds, but I wanted ChatGPT to make it easier — and even then, it takes 2 minutes and sometimes gives up.

Is this just in my head, or could it be related to the devices I’m using?

Right now I’m using an iPhone 11 Pro Max (64GB) and a Samsung Galaxy Book 4. I’m seeing the same slowdown on both.