In Dead by Daylight, perks can only be leveled up through their three tiers, and once you've unlocked a higher tier version of a perk on a certain character, you can't go back to a lower tier version unless you do a prestige reset, which in itself can only be done up to three times per character. Generally, this isn't a problem since perks get more useful as their level increases.
However, as YouTuber Otzdarva pointed out in this video, this isn't always the case. He points out two specific killer perks that are actually better at level 1, in some or all situations:
Discordance This perk notifies you when two or more survivors are working together on a generator, and highlights that generator for you. If you increase the perk's level, the duration of that highlighting also increases. Otz considers this a bad thing, because the highlight always remains for the entire duration, even if the survivors leave the generator before the time runs out. Therefore, at a higher level, it will take longer before this information gets "updated" for you.
Make Your Choice (only for certain killers) When a survivor is rescued from a hook and you are far enough away, this perk makes the rescuer exposed, allowing you to down them in one hit. A higher level increases the duration for which this effect stays active, however this also acts as a cooldown before it can be activated again. This can be a problem for certain fast killers who don't need that much time to catch the rescuer, and could instead benefit from being able to reactivate this perk quicker.
Both of these are conclusions that I'm not sure I would have been able to make on my own. As I'm soon about to prestige my first character for the third time (meaning I'm going to lose the ability of resetting that characters perks), my question is: Are there any other perks that could be considered better if they were left on level 1, especially on the survivor's side, since those weren't mentioned in the video at all?