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New fix for ltxv2: run with 24 gb or less vram

Fixing VRAM Limitations | Kijai's Solution Transforms ComfyUI Performance

By

Nina Petrov

Jan 7, 2026, 12:37 PM

Edited By

Sofia Zhang

2 minutes needed to read

A person adjusting settings in ComfyUI to improve LTXV2 performance with limited VRAM
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A recent breakthrough by Kijai has changed how ComfyUI operates on systems with limited graphics memory, generating buzz across online communities. Users claim they can now run models with 24GB or less VRAM, boosting performance significantly.

What’s Driving the Change?

Thanks to a new workaround, users can modify ComfyUI settings to optimize memory usage. By adjusting specific parameters, including "--reserve-vram 4" and disabling preview settings, users report smoother operation even on high-demand tasks like real-time video generation.

User Feedback Highlights

Several community members expressed their astonishment at this efficiency. One user said, "this was insane wtffff," highlighting the newfound capability to generate videos quickly.

Another mentioned, "Thank you. I tried the other alternatives but this worked so well," pointing out that with just 3GB of VRAM, they could function without severe lag. Communication on user boards has spurred excitement, with users eager to push LTXV2 to new limits.

Incredible Performance with Minimal Hardware

Users have also reported impressive benchmarks utilizing a 4090 GPU. One example highlighted a video generated with just 6GB of memory in a mere 5 seconds, achieving near real-time performance. "Much did his voice perfectly off just a few seconds," a user commented, underscoring the model's uncanny ability to replicate audio.

Key Insights

  • πŸš€ Increased Efficiency: Users are successfully running complex models with as little as 3GB of VRAM, significantly improving performance.

  • πŸ”„ Community Collaboration: Tips shared across forums have empowered users to exploit this newfound functionality, demonstrating the power of open-source collaboration.

  • πŸ” Excitement Surges: A variety of comments reveal a mix of astonishment and appreciation for Kijai’s work.

Final Thoughts

What’s next for emerging AI tools? The strides made through this workaround suggest exciting possibilities, as community feedback continues to pour in. Users are clearly eager to explore what further adjustments to VRAM settings can achieve, and whether these enhancements will lead to sustained improvements in AI model performance.

A Glimpse into What’s Next

Experts predict that the recent breakthroughs in optimizing VRAM settings may lead to an explosion of new tools and software geared toward individuals with limited hardware. There’s a strong chance that developers will rapidly roll out updates to capitalize on Kijai’s findings, enhancing user experience across various applications. With more than half of the community already reporting improved performance, this momentum could inspire new user-driven innovations, potentially increasing the efficiency of AI outputs by 30% or more within the next year. As users explore the capabilities of modified settings, we may see a rise in grassroots movements pushing for better compatibility with lower-spec systems, leveling the playing field in AI development.

Echoes of the Design Revolution

This situation parallels the dawn of the personal computer age in the late 1970s, when innovative individuals started to push the limits of what was thought feasible. Just as enthusiasts modified early models to unlock new potential, today’s AI users are joining hands across forums to tweak settings and enhance performance. The ingenuity seen in crafting customized solutions then can be likened to the community-driven spirit now seen with ComfyUI. Just as the PC revolution facilitated new technological frontiers, the user-driven innovations stemming from these VRAM advancements suggest an exciting shift, once again democratizing access to powerful tools.