The purge thread should be the only thread recalculating cache usage. This removes the directory scan from the critial path where it would occasionally trigger due to aligned timers (exacerbated by high rates of region crossing)
New metadata file method.
Like the previous method that only aplied to windows this is so far only available on PC and XBox BugSplat APIS. Unmlike the deprecated version, it is expected to be added to MacOS and crashpad "soon".