Record series daily this timeslot

[janoonk]

I wanted to always record "het blok nieuw-zeeland" since it's on multiple channels (SD and HD) and it's also repeated on the same day. So I used "Record series daily this timeslot" (which is btw not available in iOS client).
In example below there's a 5 minute difference but luckily all correct ones are recorded... but what's the max. difference and is there a way to set it?

[sub]

A timeslot recording is based on the start time of the original recordings +/-90 minutes (which is a default timeslot size, but can be changed). This is to allow for slight variations to the schedule each week. ie, a show might air an hour later one week due to some other event