This answer gives an example sentence meaning "you speak too quickly" to illustrate the usage of
In order to say "you either speak too quickly or too slowly", I'm pretty sure it's possible to say (2). Although (2) might be analyzed as two separate clauses: a clause with an explicit subject and a clause with a null subject.
I'm pretty sure sentence (3) is wrong. Is there another conjunction that can be used instead of
或者 that makes the sentence grammatical with the intended meaning of "you either speak too quickly or too slowly"? I added spaces to (3) for emphasis only.
*3) 你说得太快了 或者 得太慢了。