I have issues with a lot of legato patches, not just in soundpaint but in Kontakt libraries as well. As I've said countless times on this forum, a lot of legato patches—to my mind at least—seem to want to prove to potential buyers that they are indeed true legato, and they want you to hear those legato bumps clearly. The problem is, when I listen to actual players playing legato, those bumps are not so noticeable, if at all.
The Soundpaint EH is, I believe, the same as the 8Dio Claire English Horn. Because I don't like those bumps, I stripped out the sustain samples and created a new Kontakt instrument using Big Bob's WIPS legato, and to my ears it sounds much better. Unfortunately, this can only be done with Kontakt instruments unless you are willing to rerecord the Soundpaint sustains note by note.
Here's what I get with the Claire English Horn filtered through WIPS:
View attachment 8DIO ENGLISH HORN.mp3