Could not send data to output queue(parsing queue)

Hello Splunkers, Lately, we have been facing issues in onboarding the data due to the “Could not send…..parsing queue full” issue whenever there is a data burst. We have been setting maxkbps in limits.conf to unlimited(0) and parsing queue size to 10 MB from 512kb temporarily as a workaround. What is the splunk recommended best practice to address this issue. Splunk UF version - 6.4