Improved use of the graphics processor significantly speeded up brushing, gradients, and overall image rendering in the Develop module.
If you are still using an older version of Lightroom Classic, you can update to v10.4.0 via the Adobe Creative Cloud desktop app.
The 10.4.0 update focused on stability and expanding hardware support, though it included several quality-of-life improvements for Power users: Adobe Photoshop Lightroom Classic 2021 v10.4.0
To run this version smoothly, your system should meet or exceed these specifications: Minimum Requirement Recommended Intel/AMD with 64-bit & SSE 4.2 (2GHz+) Intel 10th Gen Core i7 or better RAM 16 GB or 32 GB GPU 2 GB VRAM (DirectX 12 / Metal) 4 GB VRAM for 4K displays OS Windows 10 (64-bit) / macOS Catalina Windows 11 / macOS Big Sur Updating and Troubleshooting
As part of the broader 2021 release cycle, v10.4.0 benefits from the hallmark features introduced earlier that year: Improved use of the graphics processor significantly speeded
Support was expanded for tethered capture with Live View specifically for the Nikon D750 and Nikon D610 , allowing studio photographers to see their frame in real-time on a larger monitor.
Some users reported that Canon tethering might fail in this version. A common workaround suggested by the Lightroom Queen community is to ensure the Nikon Tethering plugin is actually enabled in the Plug-in Manager, which oddly fixes the Canon connection for some. 10.3 Performance - Adobe Community Some users reported that Canon tethering might fail
Released in August 2021, was a pivotal maintenance update in the "version 10" cycle. While it didn't introduce the massive architectural shifts seen in the jump to v11, it refined the performance and camera compatibility for professional photographers working in the Creative Cloud ecosystem. Key Features and Enhancements in v10.4.0