Originally Posted by big

It's your call. You need to let the goals of your program dictate that.

In your case, if your goal is to increase your bench, deload everything around your bench. If however you are going for overall size/strength, it's not worth deloading everything just because one lift is trailing off. The idea of a deload is to back off when you are just on the brink of full overtraining to allow you to recover and grow, and one or two bad sessions on one single lift probably isn't indicative of that.

Assuming everything else is going well, I would shoot for the same 5x5 with bench next session and see how you get on, while increasing everything else. It might have just been a bad session.

Cap is deloading each lift as appropriate and it's working well for him. In the past when I have run this routine, I have always deloaded everything together and it's worked well for me. But you need some trial and error the first time round to estimate when your lifts will start to trail off. No sense in deloading if you're still getting stronger.

Just bear in mind that next training cycle you probably need to start off your bench a bit lighter percentage-wise in order to try to match up your lifts as best as possible.