Although INP is not intended to measure scrolling performance, there were certain sequences of Event dispatch where Event Timing unintentionally would sometimes measure what would ultimately be a scroll starting interaction. We're excluding these scroll starting interactions from INP measurement with this change.
Note: this experiment was first landed in Chrome 125: Treat Orphan Pointerup As Non-Interaction, and was slowly rolled out.
Sites previously affected by scroll starting interactions may observe a drop in number of interactions and an improvement on INP score since high outliers result from scrolling during early loading are now excluded from INP measurement.
Chrome 128 will be released the week of August 20, 2024.
