Performance problem with SHARED coverage recorder in Grails app

    setuptask = { ant, binding, plugin ->
        ant.'clover-setup'(initstring: ".clover/common.db") {
            ant.fileset(dir: "grails-app", includes: "**/domain/**, **/controllers/**, **/jobs/**, **/services/**, **/taglib/**, **/utils/**") { }
            ant.fileset(dir: "src", includes: "**/*.groovy, **/*.java", excludes: "**/script@*.groovy, **/system/generator/**, **/system/database/generators/**, **/castor/**") { }
            ant.fileset(dir: "test", includes: "**/*.groovy") { }
            // ant.testsources(dir: "test", enabled: false) { }
            ant.profiles {
                ant.profile(name: "default", coverageRecorder: "SHARED")
            }
        }
    }