i suspect you need to make further changes to related settings… from the manual, see bold text:
TRIG QUANT is only available when the PLAYS FREE setting is activated. It allows both
quantized start and stop of the playback of the tracks. Note that the sequencer needs to be
playing for this setting to have any effect. The TRIG MODE setting, covered above, also
affects the how the [TRIG] keys will control the playback. Choose between the TRIG
QUANT settings with the LEVEL encoder.
• DIRECT will make a disconnected track start playing as soon as the corresponding
[TRIG] key initiating track playback is pressed.
• TR. LEN will quantize the start and stop of the disconnected track according to the
total length of the track.
• 1/16… will quantize the start and stop of the disconnected track according to set
step length. If the chosen value starts to blink that indicates the value, depending on
whether NORMAL or PER TRACK scale is active, exceeds either the length of the
pattern or the set master length. The track quantization will then will then be set
either according to the pattern length or the master length, again depending on
active scale mode.