-Guy finishing himself off
-Too much focus on tits; might be in the minority here, but I don't like tits and it breaks the immersion having them shoved so prominently in my face for a prolonged period.
-Obviously unrealistic moans. Some girls are really good at sounding more natural, others not so much.
-Lack of engaging dialogue. I don't want the girl to just shut up and fuck, or limit herself to phrases like "Oh yeah, just like that." I love when she actually uses her words to tease, add some wholesome humor, or just generally to interact more to increase the belief that she's not just a toy.
-Facing away from the camera (doggy, reverse cowgirl). I want to see the girl's face, and when she turns away it takes me out of the scene. Likewise with pussy and ass closeups, or when she's riding and her head is out the top of the frame.
-Standing positions. Since I'm usually laying back or laying down most of the time, a standing position feels extremely unnatural and disorienting.
-Laying on top of the girl. Similar to standing, this conflicts with the position that I'm usually at. I'm not actually sure how this one works for anyone practically unless you're laying on your stomach, since adjusting the angle of the video doesn't change that I still feel off in my physical real world space. Imo the best positions are laying and sitting cowgirl (especially the sitting for those sweet closeups on her face).