Continuity Visually Ready (c.tti.vr) gradually increased in Chromium 105 and 106

[Quadiago]

Hi all

I realize that the title of this issue makes it sound like I should be raising this against Chromium support, but I was hoping for some advice from the Boomerang community to start. We've started noticing an increase in c.tti (Boomerang TTI) on our pages which we've traced (is correlated) with a similar increase in c.tti.vr, which I believe is thanks to a change in performance.timeOrigin. I had thought initially it was thanks to changes to LCP, but my data does not back this up.

The only problem is, the changes made in Chromium to performance.timeOrigin should not have the effect we're seeing, so I'm hoping someone else has been looking at similar things and has some advice.