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CloudStrife76
User level: Level 1 (5 points)

How do I fix TikTok lagging while streaming Netflix on iPhone 17 Max Pro?

Idk if there has been an update lately that wasnt announced but for some reason my iPhone 17 max pro can handle streaming Netflix to my chromecast while surfing TikTok anymore


This started like a week ago


TikTok just keeps lagging and loading like the cache memory cant handle it anymore but when i turn off streaming it works fine


I've restarted both phone and my other devices, cleared cache on phone aswell as apps but its still not working


This has NEVER been an issue before. Is this rly the peak of iPhone? Are you gonna tell me that a phone that cost me €1500 cant actually stream and handle TikTok ats time?


My connection is 270mb on wifi with no latency and i've checked it for errors but theres nothing wrong with my connection.


I've heard customers having issues with apps that wont work alongside eachother, is this rly the peak of Apple, is this rly the quality we pay for?



[Re-Titled by Moderator]

Original Title: Apps not working properly

Posted on Oct 19, 2026 5:07 AM

2 replies

SravanKrA
User level: Level 10 (454,138 points)

Oct 19, 2026 5:51 AM in response to CloudStrife76

What makes you think your iPhone 17 Pro Max can no longer handle streaming Netflix to your Chromecast while simultaneously browsing TikTok?


You mentioned that TikTok starts lagging and repeatedly loading whenever you stream Netflix to your Chromecast, but works normally as soon as you stop streaming. However, this alone does not establish that your iPhone is responsible for the problem.


First, neither Netflix nor TikTok is an Apple app; both are third-party applications. Similarly, Chromecast is a Google product, not an Apple service. Apple provides its own wireless streaming technology, AirPlay, but Chromecast uses Google's technology.


There are several possible causes that need to be considered before concluding that your iPhone is at fault. Your internet bandwidth could be a contributing factor, particularly if Netflix streaming and TikTok are competing for limited bandwidth. Wi-Fi congestion, network performance, router limitations, or a temporary issue with either application could also explain the behaviour.


Furthermore, if you are casting Netflix to your Chromecast, the Chromecast may stream the content directly from the internet rather than continuously receiving the video from your iPhone. In that case, the impact on your iPhone could be quite different from what you are assuming.


You also mentioned that TikTok works normally as soon as you stop streaming Netflix. That observation is useful, but it does not prove that the iPhone's cache memory is insufficient or that the device cannot handle both activities simultaneously.


Zeroing in on the iPhone without first understanding how Chromecast, Netflix, TikTok, and your internet connection interact seems premature. Before attributing the problem to the iPhone 17 Pro Max, it would be more appropriate to investigate the other possible causes and establish which component is actually responsible.

Cnhor_anderson
User level: Level 1 (8 points)

Oct 29, 2026 11:12 AM in response to SravanKrA

I have the same isssue, but I do not think is BW problem, sometimes I made TikTok work as usual by switching from one app to another and when for example if in the dynamic island appears the current app I am running with chromecast like Netflix I have noticed the issue occurs on TikTok, start to reproducing and then stop, but after switching several times from Netflix app (whatever app using in chromecast) to another the Dynamic Island turns black and then TikTok start working as usual with no lag.

Originally posted at discussions.apple.com/thread/256378889