Forum marking threads already read too quickly

[area]

Hello,

How can I get the forums to stop marking all threads read so quickly? As it is now, if I look away for a couple of minutes and come back all the new/replied to threads are marked read in every subforum. Heck, even if I read a long thread it can time out.

I tried looking for a setting in the User CP, but nothing stood out for me.

Thanks for any assistance!