What is INP by device CPU cores
INP by device CPU cores shows the Interaction to Next Paint (INP) value across devices with different numbers of CPU cores (e.g. 2, 4, 8). This lens helps you identify which devices, based on core count, deliver a slower user interaction experience.
Only CPU core configurations that generated traffic during the selected period will appear.
Devices with fewer cores often struggle with multitasking and heavy JavaScript execution. This can cause delays between user interactions and visual updates — leading to worse INP scores.
Healthy INP by device CPU cores sample
Should you worry
A healthy INP by device CPU cores lens will appear fully green. Some devices may perform better, but as long as none show yellow or red, the experience is considered smooth. The more green, the better.
Unhealthy INP by device CPU cores sample
In the example below, devices with 4 cores — despite not being the most common — are showing slow INP. This means your users are likely noticing laggy interactions, which often contributes to early exits and frustration.
Resolving unhealthy INP by device CPU cores
Go-to action plan to resolve an unhealthy INP by device CPU cores:
Ask Uxi to analyze your INP by device CPU cores values and suggest improvements.
Use Filters to zero in on the slow CPU core groups. Then cross-reference with other INP lenses.
Simulate INP of the suspected lens to see if fixing it will resolve the INP by device CPU cores. If yes, this is where the resolution focus should be.
Use an automated INP optimization tool like INProve to improve your INP by device CPU cores values.
Once you’ve improved INP, set an alert to be the first to know if it starts worsening again.
Try it yourself
Discover how your website performs with real user data.