I bought Snap 15 -- the latest is Snap 17. Snap up to version 15 allows you to set the codec used for video capture, which is why I bought several versions of the app over the years. The codec is responsible for compressing the video, and for capture it must be fast, efficient, and capable of high levels of compression, e.g., H.264 & H.265. If it's not fast enough encoding the video falls behind and you lose frames. If it's not compressed enough the file is too large to be written to disk in real time, and again frames are lost. With Snap 15 I have no trouble capturing 1080p 30 fps to H.264/H.265. The ability to set the capture codec is not present in Snap 16. As with Snap 15, this version uses a hidden control panel at the top of the screen that expands on mouse over. IMHO it's a bit too gimmicky and actually makes using the app less efficient than alternatives -- there's a reason that none of the very many capture apps out there have copied the feature.
Along with adding [a likely redundant] copy of the 2022 Microsoft C++ runtime files, .NET 8 is also installed -- 10 is the latest version of .NET. In total I recorded 3925 new files monitoring the installation in a Win11 25H2 VM. While Snap 16 only adds a few new registry keys, the C++ runtime and .NET 8 have a high impact. The Program Files\ Ashampoo folder contains 993 files in 68 folders taking up 423MB, the Users\ [UserName]\ AppData\ Local\ Ashampoo\ folder contains less than 1MB, and the Users\ [UserName]\ AppData\ Roaming\ Ashampoo Snap 16\ folder holds 88 files in 28 folders taking up 136MB.