ISLC 1.0.2.8 does not just blindly wipe your RAM cache at random intervals (which could actually hurt performance). Instead, it uses two customizable triggers:
Windows uses an aggressive data-caching strategy. When you close an application, Windows transitions its footprint from "Active Memory" into the . The OS does this under the assumption that you might reopen that app later, allowing it to load instantly from RAM instead of your slower storage drive.