Even a strong dose of LSD like 500ug I would remain functioning but visuals would be everywhere and I would become sensitive to sounds and touches (I am experienced, start lower than 500ug). The danger of acid is combining it with weed at a ultra dose, like 9 or 10 hits while chainsmoking bowls covered in kief. That would be the lose sanity and reason drop off point. These in my opinion are levels of microgram acid doses:
100ug- Noobies start here
200ug -Good Visuals and Body
300ug- Great Visuals and Body
375ug-First drop off point for some, just hard to adapt to being high and doing tasks that should be easy. Roughly the biggest dose you should be in public on unless around friends or you are very experienced tripper
400ug-Strong Visuals and Body, easy tasks become moderately challenging. Your thoughts can slip from time to time.
500ug- Super strong visuals and body could purr like a jet engine. This is usually around the ug where the air is like a sea of visuals that one can drag their arms across their field of vision. Might walk in a room and forget why multiple times.
600ug- Visuals so strong they are coming toward you. Geometric rainbows. Objects morph slightly if you focus on them. Body will be intense, might want a tiny amount of weed to calm down.
700ug-Like 600ug but more object morphing.
800ug- Second drop off point. Ultra Visuals, intense body, euphoria overload. Just thinking about something and staring at an object will morph that object to it, mostly if you touch it. You may lose reasonable thought process and turn music so loud it pisses off neighbors. You may start hearing music lyrics as "messages" from either aliens, demons, or ghosts.
900ug-Like 800ug but you might act on those "messages" you hear from music or in you head. Might start playing around with dangerous items like knives.
1000ug- Start to lose sanity and reason drop off point. You better be around no weapons.