A new 3.1 feature that maintains a target framerate even when your base performance fluctuates, solving the "stutter" issues found in older versions.

The most immediate use case is the office laptop. Many modern work laptops (even without discrete GPUs) have powerful iGPUs. With the portable version, you can plug in a USB stick, run Lossless Scaling without admin rights (in most cases), and apply to older titles or lightweight indie games—all without "installing" unauthorized software on a corporate device.