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Lightroom 9.4: before/after view in Develop slow | Community

To maintain peak performance in this version, Adobe Help Center recommends: Adobe Photoshop Lightroom Classic 9.4.0.10 -x64...

Adobe Photoshop Lightroom Classic 9.4.0.10, released in August 2020, stands as a pivotal update in the 2020 version cycle of Adobe's professional photo management and editing suite. While categorized as an interim update, version 9.4 introduced essential stability improvements, expanded hardware support, and targeted performance enhancements for its 64-bit architecture. Key Features of Version 9.4.0.10 Lightroom 9

This specific build refined the "Classic" desktop experience, focusing on the heavy-lifting tasks required by professional photographers. The update added support for major hardware released

The update added support for major hardware released in mid-2020, including the Canon EOS R5 and R6 , Nikon Z5 , and Sony A7s III .

It introduced millisecond-level capture time data , solving issues where high-speed burst shots were incorrectly flagged as duplicates.

Lightroom Classic 9.4 is designed exclusively for , utilizing 64-bit memory handling to process large RAW files and complex edits like panoramas or HDR merges.