in gpxset.ini.file there is [PerfManager] and underneath is Enable=0 or 1 (1 means it is enabled.then underneath type in Path01=gpxpdata\"YOUR NAME OF PERFORMANCE FILE".TXT.i have morabitos performance files so i have Path01=gpxpdata\01Morabito2003perf_Melborne.TXT then Path2=gpxpdata\02Morabito2003perf_Sepang.TXT and so on.
Keep your performance files in gpxpdata directory and put in tick on the gpxpatch main box when you start up gpxpatch but leave box next to tick empty.