AMD's FSR 4 expands its reach in compatibility due to OptiScaler's ability to adapt any contemporary upscaler to FSR 4, incorporating frame generation, on condition that the game doesn't utilize Vulkan or possesses anti-cheat measures.

In the world of gaming, frame rates and graphics quality are paramount. Two leading technologies in the field of upscaling are Nvidia's DLSS (Deep Learning Super Sampling) and AMD's FSR (FidelityFX Super Resolution). A new third-party solution, OptiScaler, is making waves by allowing users to switch between these technologies within their games.

What is OptiScaler?

OptiScaler is a tool that replaces older FSR or DLSS technologies with the latest versions, such as FSR 4 or DLSS 4. It's a manual process that requires tweaking files for each game and installing FSR 4 in each game's directory. This tool does not require any additional spending on alternatives like Lossless Scaling.

The Power of OptiScaler

OptiScaler offers several advantages. It can convert older FSR or DLSS tech to FSR 4, DLSS, or even upgrade it to a newer version of FSR. Moreover, it allows users to replace frame-generation technology and handle anti-lag features like Nvidia Reflex. This means that any game with older FSR or DLSS tech becomes technically FSR 4-compatible.

The State of Upscaling Technologies

Nvidia's DLSS technologies have been dominating the upscaling scene for years, providing near-native quality while boosting frame rates. FSR 4, on the other hand, has recently shifted to an AI-driven approach, placing it between DLSS 4 and DLSS 3 in terms of quality. AMD's FSR 4 update now matches the quality of Nvidia's DLSS technologies.

The Impact of OptiScaler

OptiScaler can increase the number of FSR 4 games on the AMD side significantly. As of May 2025, over 125 games have DLSS 4 (with frame gen) and approximately 65 games support FSR 4 natively. However, there are no explicitly available lists naming games with FSR 2 or higher and DLSS 2 or higher that support the use of OptiScaler to enable FSR 4 when the game does not run on Vulkan API and does not require anti-cheat software in the background.

Using OptiScaler

To use OptiScaler, you'll need a compatible GPU, such as an Nvidia RTX series card for DLSS or an AMD RX 9000-series card for FSR 4, due to the necessary hardware (AI accelerators). It's important to note that OptiScaler does not work with games running on the Vulkan API or those requiring anti-cheat software.

In conclusion, OptiScaler is a valuable tool for gamers who want to take advantage of the latest upscaling technologies. While it requires some manual work, the potential benefits in terms of improved graphics and performance make it a worthwhile endeavour.

AMD's FSR 4 expands its reach in compatibility due to OptiScaler's ability to adapt any contemporary upscaler to FSR 4, incorporating frame generation, on condition that the game doesn't utilize Vulkan or possesses anti-cheat measures.