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I have tried various Android versions (14, 15, 16, 17) based on AOSP, and they all suffer from stuttering/freezing when scrolling through the list of groups and chats in Telegram, as well as in some other apps. I've tested clean builds of crDroid, Infinity X, EvolutionX, and YAAP, and they all exhibit lag in Telegram. I've also tried different kernels, but that didn't fix the issue.
Observation: Setting the animation duration in Developer Options to 0.0x eliminates the scrolling freezes.
Moreover, this problem does not occur in HyperOS ports based on Android 14 and 15, nor in the original MIUI 12 firmware. So the root cause is likely related to animation compatibility (or something else tied to that animation scale setting), and this issue has apparently persisted for many years.