In April 2020, Google Ads will only have a uniform display of ads for new media and smart campaigns in CMS, as well as for video campaigns and campaigns for display in apps.
Earlier, in October 2019, trade and search campaigns switched to a uniform display.
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Google Advertising points out that the strategy of uniform display takes into account the expected effectiveness of ads throughout the day, so this approach is justified when within a given daily budget to achieve the maximum possible goals that are set for PPC advertising.
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Developers advise you to use the Impression Schedule to adjust your ad time throughout the day, and include the Maximum Conversion, Maximum Conversion Value, or Maximum Click-through strategies that will keep your campaigns within your daily budget so you don’t spend too much.