Push Pull Legs split 2x a week vs PPL once a week + extra day? Which is better for size?

Alright, forum fam, need some input on PPL splits for maximum hypertrophy. I've been running a standard PPL 2x a week (6 days in the gym) for a good while now, and it's been decent, but I'm wondering if there's a better way to structure it.

I'm considering switching to a PPL split where each body part only gets hit once a week, but then I'd add an extra 'focus' day for a lagging body part, or maybe just a general arms/shoulders day, making it a 4-day split, then rest, then another 4-day. Or just PPL once and then a full rest day.

My thinking is, with PPL 2x, some sessions feel a bit rushed, and recovery can sometimes be an issue, especially on the second push/pull/legs day. Would hitting each muscle group with higher intensity and volume once a week, and then having more recovery, lead to better growth? Or is the higher frequency of 2x a week always going to win for naturals?

What are your experiences? Has anyone switched from PPL 2x to PPL 1x (or similar) and seen better size gains? Or is the twice-a-week frequency too important to drop? My main goal is overall size and aesthetics, not strength.

For muscle size, I would generally prefer doing Push Pull Legs (PPL) twice a week, provided you can recover properly and manage the total training volume. It allows you to train each muscle group around twice per week, which can help distribute your weekly sets across multiple sessions.

However, PPL once a week with an extra training day can also work well, depending on how you use that extra day. For example, you could focus on lagging muscle groups, add some arm or shoulder work, or improve your calisthenics skills.

The most important factors for muscle growth are your total weekly training volume, progressive overload, proper technique, nutrition, and sleep. Training a muscle twice a week is not automatically better if you're doing too much and struggling to recover.

My suggestion is to choose the split you can follow consistently and progress with over time. If you have enough time for six sessions and recover well, PPL twice a week is a solid option. If you prefer five sessions or need more recovery, PPL plus an extra day can be equally practical.