There’s been a lot of discussion recently about Lightroom 5’s performance, and whether it’s faster or slower than Lightroom 4. Jim Wilde, one of our gurus on Lightroom Forums, decided to run a few benchmarks. In summary, he said:
The main finding is that in almost every test that I ran, LR5 (specifically the 5.2 Release Candidate) did indeed outperform LR4 (version 4.4). In some cases the improvement was only marginal, although in others (notably where Luminance NR was used, or when doing exports to smaller sizes) the improvement was much more obvious.
In conducting these tests I also noted the following:
– When ACR cache entries exist, and are on the same fast local storage type as the catalog, there is no performance benefit when using Smart Previews. On the contrary, there was some evidence that they may in fact have a small negative impact during image loading into the Develop module (although this seems logical to me). I would expect, however, a different result in other setups such as when using DNG files with Fast Load Data on slower storage such as a NAS, or when ACR Cache entries don’t exist.
– When Luminance Noise Reduction is used, LR5.2 RC would seem to process it more efficiently than LR4.4, both in 1:1 Preview Rendering, and Exports.
– There is some evidence that thread utilisation when Hyper-Threading is enabled has slightly improved in LR5.2 RC, though performance was still better with it disabled.
A major caveat is that these conclusions apply to the tests that I ran on my particular system only. Other users may experience different results.
You can read his full report, complete with measurements and charts, at https://www.lightroomqueen.com/downloads/usefuldocs/jimw-lr5-performance.pdf
How are you finding the performance of Lightroom 5.2 RC compared to Lightroom 4.4?