Now that all discids > 100 minutes are cleaned we can lower the threshold in the report. It seems standard CDs can last up to ~86 minutes (https://en.wikipedia.org/wiki/Compact_Disc_Digital_Audio, https://musicbrainz.org/edit/74026794) and the current database has:
26 discids > 90 minutes
73 discids > 89 minutes
118 discids > 88 minutes
282 discids > 86 minutes
88 minutes looks like a good compromise to get results but not too many false positive.