Release 5.6.1: https://downloads.luoshuangfw.io/gpulm-releases/GPULM-5.6.1.7z
Experimental feature: lightmap UV seam stitching (based on Sebastian Sylvan’s code, Fixing Texture Seams With Linear Least-Squares // A Random Walk Through Geek-Space and Fixing Texture Seams with least squares optimization · GitHub)
Disabled by default, set strength to 1 in GPULM settings → UV seam stitching to enable
This version also contains a new version of lightmap UV generation algorithm. If you want to try the seam stitching feature you probably want to use this new version.
Also, there were some issues with Vulkan that irradiance caching and stationary lights were totally broken. They are now fixed and Vulkan on both Windows/Linux should have similar performance/quality with DX12.