With the launch of AMD’s latest RX 9070 series GPUs, we also saw the debut of FSR 4, an RDNA 4-exclusive upscaling technology. Early impressions were positive, as FSR 4 reportedly outperformed NVIDIA’s DLSS 3 CNN model while delivering superior image quality compared to previous FSR versions. However, AMD’s streak of good news appears to be short-lived, as reports of strange bugs when trying to use FSR 4 have started surfacing.

This comes from Twitter/X, where the official CapFrameX team, an open-source frame time capturing tool, put the RX 9070 XT to the test but was unable to get FSR 4 working in Call of Duty: Black Ops 6. While the game is officially listed among the 30+ titles supporting FSR 4 and was the first to be showcased for it, CapFrameX reports that the feature simply “refuses” to function, leading to severe image quality issues.

It’s working just fine for others

Interestingly, under CapFrameX’s post regarding the FSR 4 issue in Call of Duty: Black Ops 6, another user commented, “Mine has it in the game menus. Working for me.” They also shared a screenshot showing the FSR 4 option available right next to the Upscaling/Sharpening settings in the game’s menu. On top of that, they provided proof of the option appearing in the AMD Radeon Adrenalin Software, suggesting that the issue isn’t affecting every RX 9070 series GPU owner.

CapFrameX also highlighted FSR 4’s buggy performance in Silent Hill 2, where the upscaling technology once again failed to work for them. However, unlike Black Ops 6, Silent Hill 2 is not an officially supported FSR 4 title, meaning the game only offers FSR 3.1 or FSR 3 as options. However, AMD advertises that FSR 3.1 can be upgraded to FSR 4 in select titles.

We don’t exactly know what settings CapFrameX is using, but a user interaction revealed a specific method to enable FSR 4. First, you have to enable FSR in the game’s menu, then exit the game, enable FSR 4 in Adrenalin, and then reload the game. It’s possible that CapFrameX didn’t follow this process, or this could indeed be a bug on AMD’s side. However, with only one user reporting the issue, it’s too early to draw any conclusions.

You can force FSR 4 with a mod

That said, if you’re facing a similar problem, one potential workaround is using OptiScaler, an FSR 4 mod that forces the upscaling technology onto any game. The mod was originally designed for unsupported titles, and we’ve seen it working well in Silent Hill 2, though results may vary across different games. Still, it’s worth trying as a temporary fix until more reports surface and AMD addresses the issue.

About the Author

Hassam Nasir

Hassam boasts over seven years of professional experience as a dedicated PC hardware reviewer and writer.