tsidxstats is filling up for the Search Activity app

[SCGvdPal]

We've installed the "Search activity" on our Monitoring Console. However, due to a couple of tscollect commands the tsidxstats directory is filling up rapidly, causing the monitoring console to crash. We now remove the files using a cronjob, but is there a cleaner way to resolve this issue?
We use the 2.2.12 version of this app, but an upgrade to 3.0.1 had a few other unexpected and unwanted consequences and we therefore reverted back to the 2.2.12 version.
The directory that is filling up is /opt/splunk/var/lib/splunk/tsidxstats.

[codebuilder]

Move your SPLUNK_DB to another disk (SAN or virtual) and away from the OS disk.

You can change this within /opt/splunk/etc/splunk-launch.conf.