: This version introduced a 64-bit engine for both PC and Mac, allowing the software to access more system memory for improved performance with large models .
Downloading unofficial "portable" software from third-party sites carries heavy risks: Downloading older versions | SketchUp Help
Every software update aims to fix bugs and introduce features, but Version 15.2.687 is widely regarded by the community as one of the most stable builds of the 2015 release cycle. It refined the 64-bit architecture introduced earlier in that series, offering better performance for larger, more complex models. Key Features of SketchUp Pro 2015