I don't think this is a GrapheneOS per say, might be a hardware issue, but someone here might have a solution? But I just got my Pixel 6a from the repair store for a screen replacement since it broke when I dropped it. The first thing I noticed is that the fingerprint reader didn't work, apparently it needed to be calibrated (which worked after a few tries).
But I also noticed that the touch seems to "lag", which is noticeable when trying to type something. Sometimes it works flawlessly, but most of the times lot of characters is missing when I typing and the touch on that letter isn't recognised. Have to type pretty slow for every letter to appear. Before the screen was replaces I didn't have this issue at all, I could type pretty fast and (except typing errors) got all letters I wanted.
Is there a way to calibrate the touch itself, or something like that to the lagging stops?