Sex on acid can be one of the most beautifull, divine experiences possible, come up and come down specifically. Sensitivities are heightened and I'd imagine even casual sex would be fun, but the real magic lies in the levels in love and intimacy acheivable, Imo.
But...I'm not sure about it helping performance anxiety.
However, one good way to alleviate performance anxiety (or its predominantly female manifestation body hangups) is to really be in the moment with a partner you vibe with. Focusing on how you're being percieved by you partner, rather than tuning in deeply to the sensations you feel from the inside, detaches you from the act and your partner. So, don't worry about how you appear from on the outside, focus on the feeling.
Following those sensations deeply will allow you to feel responses in your pa4tner's body too. Good sex lies in that the ability to tune in to the moment, rather than going through the motions thinking abut how it looks/feels to the other person. Know how it feels for them by focusing on feeling their response.
Also, its always good to remember that nobody is universally a great lay. Knowing your own and partners body can put some tools in the bag that will help, and being comfortable with your body makes a big difference, but not everybody vibes like that, and often it surprises who will or will not push your buttons. For me the biggest factor in how good it is is how attuned both partners are to their and their partners sensations.
And really, what better time to be here now than during sex, right?
Forge a Path with Heart <3