I have a fix ready for this in cl: 17967661 ...
Find the root cause and fix it. ...
Issue is detailed in the UDN linked. Investigate and fix. ...
a fix was proposed in the UDN but it needs to be tested and revised ...
This is a regression from a long while ago that needs to get fixed ...
Licensee notes issue with csgRebuild and proposes a reasonable fix. ...
Fixed in Dev-Editor (CL# 3479874). Needs merging. ...
This one should be fix in the squeletalmesh quadric reduction own by the geometry tools. ...
Please see the UDN for a potential fix/workaround description. ...
setting GSupportsTimestampRenderQueries=false or r.GPUStatsEnabled=0 can fix it ...