Massive jittering going on with default example

[javismiles]

I installed the default basic example with the trex, and it runs great, I point my google pixel 4a android phone to the picture, and voila, the trex appears, but, it massively jitters, it is constantly jumping around, even though I keep my phone still

whats the solution for this? it is unusable in this way, I used ar.js years ago with markers and this was not happening

is this a problem with nft images? any tweak to stop the jittering and instability?

thank you very much