Hi guys, I've got mine too. I haven't tried it yet, because I'm waiting for my raspi to set it up. I've noticed however,  that the stick's layout has slightly changed compared to v8.1. Did you see it? Has it anything to do with its performance?

I'm unfortunately not allowed to attach any pictures, maybe because I'm new here, but found out the way how to explain what has changed:

https://www.419mining.com/wp-content/uploads/20211012_184638-600x800.png

The black regulator (?!) with 14 legs on the right hand side, directly under the screw has gone and it was replaced with an 8 legged one, which is ca. 1/5 of the original's size.