The fluency of vivoOriginOS varies with usage, but overall, its fluency is good. At the beginning of its release, OriginOS focused on optimizing running memory. Running memory plays an important role in system fluency! Maximize the survival number in the background, and the operation line is not stuck. While managing the running memory, we can clear the background cache space with one click, and start memory fusion +8G when the storage space of the mobile phone is sufficient.