... inst vars such as sCOFfn are set up in initialiseModule. You're querying the SecurityPlugin on every access as in
canStatFilePath: aPathCString length: length...(hasSecurityPlugin = 0) ifTrue: [^ true].sCOFfn := interpreterProxy ioLoadFunction: 'secCanOpenFileOfSizeWritable' From: 'SecurityPlugin'.sCOFfn ~= 0...