Yeah, if you display all the PIDs at once the refresh rate is a little laggy. You can make a custom list with just a few PIDs and the refresh rate becomes a lot quicker. But it isn’t true live data in the sense. Still works for what I need it to
...and they work probably for 99% or MORE of things out there. I can count on half a hand the times I've really NEEDED true live data. It's pretty rare.
