Have a read of the description and the bullet points. Do they contradict?
Threshold for track deletion, specified as a two-element vector of positive non-decreasing integers [P Q], where P is less than or equal to Q. If a confirmed track is not assigned to any detection P times in the last Q tracker updates, then the track is deleted.
• Decrease Q (or increase P) if tracks should be deleted earlier.
• Increase Q (or decrease P) if tracks should be kept for a longer time before deletion.
From: https://au.mathworks.com/help/driving/ref/multiobjecttracker-system-object.html under deletion threshold
So, based on my own understanding of the description, it seems like you would decrease P if tracks should be deleted earlier...
I've asked ChatGPT and Gemini; they both said I am wrong and that MATLAB is right, but when I turned on complex thinking for Gemini and for Claude, they both said MATLAB is right, but at the end of their sentences, they said I'm actually right. I don't understand how AI can't seem to grasp this, even though it seems much easier to understand than all the other complex stuff AI can do.