Impact of 1 rep @ RPE 10 deadlift on a training session

Hi.

I began lifting a few months ago as a rank novice. After starting strength novice linear progression, I’m now on the Bridge, week 6. Everything was going relatively well so far. This week had the introduction of the 1 rep @ 8.

I calculated 465 lbs for my first ever 1 rep deadlift. The last warmup at 415 felt a harder than expected. Ambivalent, I made the mistake of going for the planned 465 anyway. It turned out to be a real grinder @ 10 RPE. After that for the first set of 4 @ 8, I had originally planned 395, a load similar to the preceding week. Feeling beaten up by the rep @10, I decided to go for a ligther weight at 365. The bar wouldn’t leave the floor. I then tried 335, and the first rep turned up to be RPE10. Confused, I stopped there and moved on to the bench press. Bench and my first 1 rep @ 8 moved as planned.

Then came the beltless squats (sets of six reps), and after a difficult warm up, the first working set at a weight below the preceding week turned out to be a failure (I racked the bar when the second rep felt like rpe 9). I significantly lowered the weight, to a warm up range, and the first rep turned out to be RPE10. I racked the bar . Discouraged, I packed my things up and left. I’m more sore that usual today and getting up a chair feels hard.

Recovery variables (sleep, nutrition, stress) have been stable and good lately. I’m a 31 y.o healthy male.

My question is: in such an off training session, is it reasonable to quit? Or should have I just kept lowering the weight and completed the sets and reps with light weights usually handled in a warm up territory ? Any other advice/comments are appreciated. Thank you.

The best course of action, in pretty much every situation like this, is to lower the weight and adhere to prescribed sets, reps, and RPE. We autoregulate load according to effort (RPE) so that we can account for these performance fluctuations on every training day - even the severe performance fluctuations like you experienced.