Frequency capping is a feature within ad serving that allows to limit the maximum number of impressions/views a visitor can see a specific ad within a period of time. E.g.: 3 views/visitor/24-hours means after viewing this ad 3 times, any visitor will not see it again for 24 hours.

What do you mean by frequency capping?

A feature that limits the number of times your Display or Video ads appear to the same person. You can set a frequency cap to manage the number of impressions on the campaign, ad group, or ad. ...

Should I enable frequency capping?

Frequency capping lets you limit the number of times your ads appear to the same person. ... Setting a frequency cap can be helpful if you want to limit the number of times someone sees your ad, or if you want to focus more on gaining exposure to new people.