Emmc 5.1 Vs Ufs 2.2 Speed
is like a walkie-talkie: you have to wait for the other person to stop talking before you can speak. If your phone is downloading an app update, it struggles to simultaneously read the data needed to keep your UI smooth, leading to "stutter."
eMMC 5.1 heats up quickly under sustained load (like recording video or playing PUBG). When eMMC gets hot, the controller throttles speeds down to 30 MB/s or less, causing stutters. UFS 2.2 runs cooler and maintains peak performance longer. Emmc 5.1 Vs Ufs 2.2 Speed