It's been observed that LR has shifted in that it's no longer the golden rule of "10 in 10 mins" or "15 in 15 mins". As you have experienced, questions as early as #5 can be the 2nd hardest question in the section.
... , mitigating nervous system arousal is key! Physiological arousal systematically escalates from ... and calms everybody down. The key is to interrupt nervous escalation ...