What is Cache Mode
When UAsset Browser is opened, the folders/assets data will be gathered right away and saved in memory for displaying/validating/importing. The gathering process time is highly depending on the files number and the hardware performance.
folder gathering
asset gathering
While swithcing to Cahce Mode, the processed folders/assets data will be stored in one cache database file, and can be serialized into memory as requested, and skip the time consuming gathering step.