filter not deleting

[4bf9gSBj]

i have debug turned on for filters
in my debug file i've got lines like

11/15/2022 00:00:15.651828 zmfilter_4[528].DBG [main:302] [Checking event 1807527]
11/15/2022 00:00:15.652008 zmfilter_4[528].INF [ZoneMinder::Event:373] [Deleting event 1807527 from Monitor 9 StartTime:2022-11-12 14:22:58 from /var/cache/zoneminder/events/9/2022-11-12/1807527]
11/15/2022 00:00:15.694200 zmfilter_4[528].DBG [ZoneMinder::Event:398] [Not deleting event files from /var/cache/zoneminder/events/9/2022-11-12/1807527 for speed.]

what does not deleting for speed mean

[dougmccrary]

Possibly options > System > OPT_FAST_DELETE ?