It does appear that auto-repeat has stopped working somewhere between 4.10-rc7 (works/repeats) and 4.10-rc8 (doesn't work/repeat). Repeat is fine with the same builds and 4.9.y kernel. Sigh.
Texture Cache Maintenance Utility: Preload your texture cache for optimal UI performance. Remotely manage media libraries. Purge unused artwork to free up space. Find missing media. Configurable QA check to highlight metadata issues. Aid in diagnosis of library and cache related problems.