Overview
- Optiscaler released version 4.0.2b on GitHub, with the developer claiming performance improvements and a ghosting fix for Radeon RX 6000 cards using FSR 4 INT8.
- The update removes the need for modifying older drivers, with reports indicating the latest official drivers are sufficient for setup.
- The tool automatically swaps in the leaked INT8 FSR 4 libraries suitable for RDNA 2 and RDNA 3, which differ from the official FP8 path used on RDNA 4.
- Earlier reporting noted roughly 10–20% performance regressions with FSR 4 on these GPUs, while early user feedback now points to better performance and reduced ghosting.
- Recent Optiscaler builds added Vulkan game support that reporting says is still missing from AMD, and the company has not committed to supporting the INT8 variant.