Question about switch to fiber Internet

I didn't want to start a new thread so there's a bonus question at the end of this one about Vimtag cameras.

Main question: I upgraded from AT&T Internet 300 (300 mbps) to AT&T fiber Internet 1,000 (1,000 mbps). Where am I supposed to see a difference? With that sort of jump I thought it would be noticeable but I don't see any difference in my streaming, Internet browsing, etc. I really only use Internet for surfing the web on my phone and streaming via Apple TV. I don't do any gaming or large work projects at home.

The price difference was somehow the same ($60/mo) for Internet 100, 300, and 1,000 so obviously I went with fiber but I'm not seeing a difference.

I have a relatively small house so signal strength should not be an issue. Just odd that I can't really tell any difference.

Bonus question: Have had this for about 6-7 years. Usually just use it to keep an eye on the cat when I go out of town (she’s hardly ever in view). Ever since I got it I noticed the app, instructions, etc. are all written in butchered English. As I suspected, the company is Chinese. I’m not one to wear a tinfoil hat but are they on the up and up? Anyone else use these?

I know I’ve got a ton of Chinese-made devices but none that are constantly observing. Just curious if any of y’all use Vimtag products?