I have put the logging into verbose mode, then startup the application without loading any URL, maybe something in this log that can provide a clue ?
[1008/162740.909:VERBOSE1:pref_proxy_config_tracker_impl.cc(186)] 00000186DAC0B9C0: set chrome proxy config service to 00000186D78996A0
[1008/162740.924:VERBOSE1:webrtc_internals.cc(118)] Could not get the download directory.
[1008/162741.431:VERBOSE1:network_delegate.cc(32)] NetworkDelegate::NotifyBeforeURLRequest:
http://wpad/wpad.dat[1008/162741.435:VERBOSE1:pac_file_fetcher_impl.cc(301)] Fetched PAC script does not have a proper mime type:
[1008/162741.555:VERBOSE1:proxy_resolver_v8_tracing.cc(930)] PAC-error: line: 14: Uncaught SyntaxError: Unexpected identifier
[1008/162741.556:VERBOSE1:configured_proxy_resolution_service.cc(1139)] Failed configuring with PAC script, falling-back to manual proxy servers.
[1008/162749.559:VERBOSE1:network_delegate.cc(32)] NetworkDelegate::NotifyBeforeURLRequest:
http://wpad/wpad.dat[1008/162749.561:VERBOSE1:pac_file_fetcher_impl.cc(301)] Fetched PAC script does not have a proper mime type:
[1008/162853.366:VERBOSE1:statistics_recorder.cc(430)] Collections of all histograms
Histogram: ChildProcess.FieldTrials.CreateFromShmemSuccess recorded 1 samples, mean = 1.0 (flags = 0x1)
0 O (0 = 0.0%)
1 ------------------------------------------------------------------------O (1 = 100.0%) {0.0%}
2 O (0 = 0.0%) {100.0%}
Histogram: SharedMemory.MapBlockedForSecurity recorded 1 samples, mean = 0.0 (flags = 0x1)
0 ------------------------------------------------------------------------O (1 = 100.0%)
1 ...
Histogram: ThreadPool.HeartbeatLatencyMicroseconds.ContentChild.BackgroundTaskPriority recorded 0 samples (flags = 0x1)
0 ...
Histogram: ThreadPool.HeartbeatLatencyMicroseconds.ContentChild.UserBlockingTaskPriority recorded 0 samples (flags = 0x1)
0 ...
Histogram: ThreadPool.HeartbeatLatencyMicroseconds.ContentChild.UserVisibleTaskPriority recorded 0 samples (flags = 0x1)
0 ...
Histogram: ThreadPool.NumTasksBeforeDetach.ContentChild.Background recorded 0 samples (flags = 0x1)
0 ...
Histogram: ThreadPool.NumTasksBeforeDetach.ContentChild.Foreground recorded 1 samples, mean = 0.0 (flags = 0x1)
0 ------------------------------------------------------------------------O (1 = 100.0%)
1 ...
Histogram: V8.Initializer.LoadV8Snapshot.Result recorded 1 samples, mean = 0.0 (flags = 0x1)
0 ------------------------------------------------------------------------O (1 = 100.0%)
1 ...
Histogram: V8.Initializer.OpenV8File.Result recorded 1 samples, mean = 0.0 (flags = 0x1)
0 ------------------------------------------------------------------------O (1 = 100.0%)
1 ...