+ Use PathUtils.FindRelevantPath to search for the FPSChartStats folder within the artifacts dir. Then copy out the newest csv each iteration.
+ Remove deletion of saved dir between iterations as it's no longer needed since we grab the latest csv file.
+ Pass in the build name as it's not reliably set in Gauntlet on all platforms.
#jira UE-186796
#rnx
#rb clayton.langford
[CL 25945245 by tyler staples in ue5-main branch]
be7ecefac8