Why Hardware-Accelerated GPU Scheduling Hurts Cheap GPUs
Hardware-accelerated GPU scheduling is enabled by default on many Windows PCs, but tests show it can consume vital VRAM on older or cheaper graphics cards.
Radwan AbdulhadiEditor and technology writer
Understanding HAGS and VRAM Consumption
When users dig through Windows 11's graphics settings, they can find a toggle for hardware-accelerated GPU scheduling, or HAGS. While the feature is enabled by default on most PCs and required for DLSS Frame Generation, it can create problems for older or cheaper hardware. As reported by <a href="https://www.xda-developers.com/i-turned-off-hags-and-gained-a-gigabyte-of-vram-with-almost-no-fps-loss/">XDA Developers</a>, turning off HAGS on an 8GB RTX 2070 Super freed up nearly 950MB of graphics memory while only sacrificing three to five frames per second.
This reclaimed memory can prevent textures from stuttering in demanding titles like Cyberpunk 2077 and Stellar Blade. While the memory usage is negligible on a 16GB graphics card with plenty of headroom, it can mean the difference between smooth gameplay and running out of memory on 6GB or 8GB cards.
The Origin and Architecture of HAGS
Microsoft introduced HAGS in a May 2020 Windows 10 update. According to <a href="https://devblogs.microsoft.com/directx/hardware-accelerated-gpu-scheduling/">Microsoft's DirectX blog post</a> explaining the feature, scheduling workloads previously relied on a high-priority CPU thread that coordinated work sent to the graphics card. That process could cause slowdowns and frame delays between user input and on-screen actions.
With HAGS enabled, the graphics card manages most of that scheduling using dedicated built-in hardware, while Windows retains control over which applications are prioritized. Microsoft initially shipped the feature switched off by default, comparing the change to rebuilding the foundation of a house while living in it, and noted that users should not notice significant changes because most games already hid scheduling costs.
Hardware Support and Performance Impact
Hardware support rolled out gradually across manufacturers. Nvidia added support for GTX 10-series cards and newer in its June 2020 driver update, while AMD waited until December 2023 to add support for the RX 7900, 7800, and 7700 series. Intel currently supports the feature exclusively on its Arc B-series cards.
Performance evaluations by hardware publications demonstrate minimal frame rate differences when the feature is toggled. When <a href="https://www.tomshardware.com/news/gpu-hardware-scheduling-tested">Tom's Hardware</a> tested an RTX 2080 Ti and a GTX 1050 with and without HAGS in 2020, average performance changes ranged from minus 0.73 percent to plus 0.06 percent. Similarly, testing found no significant gains across various tested games, confirming that users do not lose much performance by disabling the setting.
Relevance to Current Hardware Markets
The memory consumption of HAGS remains relevant due to the prevalence of mid-range and budget graphics cards in current PC builds. Steam's <a href="https://store.steampowered.com/hwsurvey/videocard/">September 2026 hardware survey</a> revealed that 8GB graphics cards make up more than a quarter of all GPUs, trailing only behind 16GB cards, while 6GB cards account for 5.12 percent of the market.
At the same time, ongoing memory shortages have driven RAM prices to record highs and made it difficult for consumers to <a href="https://www.engadget.com/gaming/pc/how-to-find-an-affordable-gpu-during-the-great-ramageddon-of-2026-130000654.html">find an affordable GPU</a>. As a result, many users continue relying on older, less powerful graphics hardware where VRAM capacity is severely restricted.
How to Check and Test HAGS Settings
Users with graphics cards containing 12GB of VRAM or more can generally leave HAGS enabled, particularly if they utilize frame generation features. However, owners of 6GB or 8GB cards may benefit from testing performance on a game-by-game basis if VRAM capacity becomes fully saturated.
The HAGS toggle is located within Windows settings under Settings, System, Display, Graphics, and Advanced graphics settings. Modifying the setting requires a system restart to take effect. Additionally, software like OBS recommends disabling the feature if users experience recording or streaming issues.
Sources
- EngadgetThe simple reason hardware accelerated GPU scheduling isn't the best fit for cheap GPUs
Continue chronologically
Related entity coverage
Related stories
Microsoft adds Intel APX support to Windows 11 Insider
Microsoft is preparing for future processors by introducing an early Advanced Performance Extensions setting for Windows 11 Insiders.
Nvidia RTX Spark Tested in Microsoft Surface Laptop Ultra
Tom's Hardware puts Nvidia's RTX Spark platform and Microsoft's Surface Laptop Ultra to the test, revealing strong local AI performance.
Gears of War E-Day Pushes Unreal Engine 5 CPU Limits
An in-depth benchmark of 25 Intel and AMD processors reveals that Gears of War E-Day is an uncharacteristically CPU-heavy Unreal Engine 5 title.
Nvidia GPU Driver 621.01 Adds Advanced Shader Delivery
Nvidia's latest 621.01 GPU driver introduces Microsoft's Advanced Shader Delivery technology to speed up game launches and reduce stutters.
