QM 360 calls being made every 60 seconds. What is it?

Hi All, 

I've noticed since upgrading from Studio '13 to Studio 360 that QM quizzes (and I'm guessing Presenter as well) have the calls below made about every 60 seconds. 

Does anyone know what this is?  And more importantly where is the code located in the published output that's causing it to happen? 

Thanks for any assistance you might be able to provide. 

Best, 

Steven 

156:Fri Apr 21 2017 16:13:54 GMT-0500 (Central Daylight Time) - In CommitData
157:Fri Apr 21 2017 16:13:54 GMT-0500 (Central Daylight Time) - In ClearErrorInfo
158:Fri Apr 21 2017 16:13:54 GMT-0500 (Central Daylight Time) - In IsLoaded, returning -true
159:Fri Apr 21 2017 16:13:54 GMT-0500 (Central Daylight Time) - Did not override time, saving incremental time
160:Fri Apr 21 2017 16:13:54 GMT-0500 (Central Daylight Time) - In AccumulateTime dtmStart=Fri Apr 21 2017 16:12:55 GMT-0500 (Central Daylight Time) dtmEnd=Fri Apr 21 2017 16:13:54 GMT-0500 (Central Daylight Time) intAccumulatedMS=0
161:Fri Apr 21 2017 16:13:54 GMT-0500 (Central Daylight Time) - Accumulating Time
162:Fri Apr 21 2017 16:13:54 GMT-0500 (Central Daylight Time) - intAccumulatedMS=58584
163:Fri Apr 21 2017 16:13:54 GMT-0500 (Central Daylight Time) - In SCORM_SaveTime intMilliSeconds=58584
164:Fri Apr 21 2017 16:13:54 GMT-0500 (Central Daylight Time) - In SCORM_ClearErrorInfo
165:Fri Apr 21 2017 16:13:54 GMT-0500 (Central Daylight Time) - In ConvertMilliSecondsIntoSCORMTime, intTotalMilliseconds = 58584, blnIncludeFraction = true
166:Fri Apr 21 2017 16:13:54 GMT-0500 (Central Daylight Time) - Separated Parts, intHours=0, intMinutes=0, intSeconds=58, intMilliseconds=584
167:Fri Apr 21 2017 16:13:54 GMT-0500 (Central Daylight Time) - In ZeroPad intNum=0 intNumDigits=4
168:Fri Apr 21 2017 16:13:54 GMT-0500 (Central Daylight Time) - Returning - 0000
169:Fri Apr 21 2017 16:13:54 GMT-0500 (Central Daylight Time) - In ZeroPad intNum=0 intNumDigits=2
170:Fri Apr 21 2017 16:13:54 GMT-0500 (Central Daylight Time) - Returning - 00
171:Fri Apr 21 2017 16:13:54 GMT-0500 (Central Daylight Time) - In ZeroPad intNum=58 intNumDigits=2
172:Fri Apr 21 2017 16:13:54 GMT-0500 (Central Daylight Time) - Returning - 58
173:Fri Apr 21 2017 16:13:54 GMT-0500 (Central Daylight Time) - strCMITimeSpan=0000:00:58.58
174:Fri Apr 21 2017 16:13:54 GMT-0500 (Central Daylight Time) - returning 0000:00:58.58
175:Fri Apr 21 2017 16:13:54 GMT-0500 (Central Daylight Time) - strCMITime=0000:00:58.58
176:Fri Apr 21 2017 16:13:54 GMT-0500 (Central Daylight Time) - SCORM_CallLMSSetValue strElement=cmi.core.session_time, strValue=0000:00:58.58
177:Fri Apr 21 2017 16:13:54 GMT-0500 (Central Daylight Time) - In SCORM_GrabAPI
178:Fri Apr 21 2017 16:13:54 GMT-0500 (Central Daylight Time) - SCORM_GrabAPI, returning
179:Fri Apr 21 2017 16:13:54 GMT-0500 (Central Daylight Time) - Calling LMSSetValue
180:Fri Apr 21 2017 16:13:54 GMT-0500 (Central Daylight Time) - strResult=true
181:Fri Apr 21 2017 16:13:54 GMT-0500 (Central Daylight Time) - Returning true
182:Fri Apr 21 2017 16:13:54 GMT-0500 (Central Daylight Time) - In SCORM_CommitData
183:Fri Apr 21 2017 16:13:54 GMT-0500 (Central Daylight Time) - In SCORM_ClearErrorInfo
184:Fri Apr 21 2017 16:13:54 GMT-0500 (Central Daylight Time) - In SCORM_CallLMSCommit
185:Fri Apr 21 2017 16:13:54 GMT-0500 (Central Daylight Time) - In SCORM_GrabAPI
186:Fri Apr 21 2017 16:13:54 GMT-0500 (Central Daylight Time) - SCORM_GrabAPI, returning
187:Fri Apr 21 2017 16:13:54 GMT-0500 (Central Daylight Time) - Calling LMSCommit
188:Fri Apr 21 2017 16:13:54 GMT-0500 (Central Daylight Time) - strResult=true
189:Fri Apr 21 2017 16:13:54 GMT-0500 (Central Daylight Time) - Returning true