Blue Coat Field extractor name=custom_client_events is unusually slow

We are running the Blue Coat ProxySG App for Splunk app (https://splunkbase.splunk.com/app/2815) and associated TA downloaded from the BTO site. When running on a distributed environment with multiple indexers, we receive the following message: Field extractor name=custom_client_events is unusually slow (max single event time=1146ms) The transforms.conf contains: [custom_client_events] REGEX = (?[^\s]+)\s+(?[^\s]+)\s+(?[^\s]+)\s+(?[^\s]+)\s+(?[^\s]+)\s+(?[^\s]+)\s+(?[^\s]+)\s+(?[^\s]+)\s+\"(?[^\"]+)\"\s+(?[^\s]+)\s+(?[^\s]+)\s+(?[^\s]+)\s+(?[^\s]+)\s+(?[^\s]+)\s+(?[^\s]+)\s+(?[^\s]+)\s+(?[^\s]+)\s+(?[^\s]+)\s+(?[^\s]+)\s+(?[^\s]+)\s+\"(?[^\"]+)\"\s+(?[^\s]+)\s+(?[^\s]+)\s+(?[^\s]+)\s+\"*(?[^\"]+)\"*\s+\"*(?[^\"]+)\"*\s+\"*(?[^\"]+) Is it possible to optimize this regex and get rid of the "unusually slow" error message? Thanks