Performance Issue with Google Ads Causing UI Hangs in SwiftUI ScrollView

Puneeth Sb

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May 30, 2025, 3:00:35 AM (11 days ago) May 30

to Google Mobile Ads SDK Developers

Hi Team,

We are currently working on an iOS application built using SwiftUI, and we’ve integrated multiple Google Ads within a ScrollView. However, we’ve observed that the app becomes noticeably laggy or hangs while scrolling, particularly in views with embedded ad units.

After profiling, it appears that this issue stems from Google Mobile Ads SDK operations occurring on the main thread, which blocks UI updates and negatively impacts the scrolling performance.

We’ve tried optimizing the task execution using background threads (Task, Task.detached, and Task(priority: .background)), but since the SDK is largely main-thread-bound, the issue persists.

Could you please advise on the following:

Are there best practices for integrating multiple Google Ads in SwiftUI that minimize main-thread usage?
Is there any official guidance or configuration to offload ad processing from the main thread?
Are there any plans for improving SwiftUI performance support in upcoming SDK releases?

Any support or insights to improve the scrolling performance while using Google Ads in a SwiftUI-based app would be greatly appreciated.

hangs2.png

hangs1.png

Mobile Ads SDK Forum Advisor

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May 30, 2025, 9:02:23 AM (11 days ago) May 30

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Hi Puneeth,

Thank you for contacting the Mobile Ads SDK Support team.

I will check with our team regarding your queries and one of my team members will reach out to you once we have an update on this. Meanwhile, your patience is highly appreciated.

Thanks,

Mobile Ads SDK Team

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[2025-05-30 06:01:37Z GMT] This message is in relation to case "ref:!00D1U01174p.!500Ht01rdn3F:ref" (ADR-00309111)

Mobile Ads SDK Forum Advisor

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Jun 7, 2025, 12:30:02 AM (3 days ago) Jun 7

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Hi Puneeth SB,

As requested earlier we would require a minimal sample project in which the issue is occuring. You can add the code that cause hanging to the Google sample application and share it with us so we can make progress on this issue.

You can provide the following details via reply privately to the author option or below link.

If the file(s) you are looking to share are less than 25mb in total you can attach them to this case on your next reply. If you are having trouble attaching your file to this case or if your file(s) are larger than 25mb. Kindly follow using the steps below:

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Thanks,

Mobile Ads SDK Team

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[2025-06-06 21:28:50Z GMT] This message is in relation to case "ref:!00D1U01174p.!500Ht01rdn3F:ref" (ADR-00309111)

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