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iMore Question Hi, Im using iphone 8, and whenever i play video on youtube and scroll comments at the same time, the whole screen is just laggy and that annoys me.. But when i pause the video and scroll it's perfect, no problem.. I tried playing video at 144p but it's still lagging. I have latest version of youtube.
Too many unknowns to guesstimate.
Are you on LTE or wifi? What are your LTE / wifi speeds? How much storage space on your device and how much free? How many apps do you have installed? Are you on iOS 13 beta or 12 official?