Ok.. I read through a few posts, now tried with incognito and runs smooth. At least it's not about actual lag..
By the way.. the connection quality in the stadia menu is rated as "good". And even if it wasn't ideal, I'd expect rather the resolution to go down instead of the game performance.
I´ll always start chrome from scratch and use stadia in a dedicated probile wihtout any chrome add-ons to avoid interference. No issues with that so far.
Ok.. I read through a few posts, now tried with incognito and runs smooth. At least it's not about actual lag..
Go to Chrome://flags and type in
Enables pointer lock options
Change this to enabled and restart Chrome. This should work on Chrome OS as well, but I have not tested it yet.