AMD Adds System Lag Monitoring For Games That Support Anti-Lag+, Useful To Evaluate PC Latency

AMD's latest driver has added a useful PC latency monitoring feature known as "System Lag" in games that support Anti-Lag+ technology.

AMD System Lag Is A Useful Latency Monitoring Tool For Radeon RX 7000 GPU Owners

As the name suggests, the System Lag monitoring feature determines the system lag of your PC. It is basically designed to evaluate the latency when Anti-Lag+ is enabled. The mechanism is similar to NVIDIA's PCL (PC Latency) feature that is also embedded within the FrameView application. So it is good that AMD is providing similar monitoring tools to its Radeon userbase too.

Now, before we proceed it is important to note that "System Lag" is limited to AMD's RDNA 3 GPUs such as the Radeon RX 7000 series, meaning that at least for now, older RDBA architectures won't support it.  This is because Anti-Lag+ is only supported by the RDNA 3 architecture while older GPU series support the standard Anti-Lag technology. Here is the description of the feature:

System Lag is the measured latency between when the game generates the frame and is finished rendering by the GPU. This does not include factors like display latency, which may be further increased by features like Enhanced Sync. Additionally, system lag does not include the additional latency of the frame generation from AMD Fluid Motion Frames.

The Frame Generation lag metric can be used to display this. System lag is only available when Radeon Anti-Lag+ is active. For Anti-Lag+ games that support both DirtectX11 and 12, system lag is only available with DirectX 12. System lag will be displayed as N/A when using DirectX 11.

AMD Drivers via CapFrameX

In brief testing by CapFrameX, it was revealed that in Star Wars Jedi: Survivor, both NVIDIA's PC Latency and AMD's System Lag were able to showcase similar latencies which means that both are running as intended and there's no discrepancy between the two monitoring tools.

New Adrenalin overlay metric: System Lag

The feature is available with 23.30.01.02 preview driver if Radeon Anti-Lag+ is supported. The numbers looking very similar to Nvidia's PC Latency, so there must be info from the game directly (render start) to be able to cover the… pic.twitter.com/odgJHJ7Afp

— CapFrameX (@CapFrameX) October 8, 2023

To access System Lag, you should have the latest AMD Radeon preview drivers installed, and the option can be seen under the "Performance" section. The Anti-Lag+ technology is enabled through a driver toggle and is supported within the following games as of right now:

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