Not quite sure what your describing?
wether or not you release it immediately or wait shouldn't matter, it's not like your releasing it faster than the slide cycles. Probably in trying to release it slowly you may not be coming off of it far enough, untill you get used to it it is not as definite as a glock.
also as a common saftey rule your finger should be outside of the trigger guard when releasing the slide from locked. I do not know if it is common to not reset or not as I have never done this.
wether or not you release it immediately or wait shouldn't matter, it's not like your releasing it faster than the slide cycles. Probably in trying to release it slowly you may not be coming off of it far enough, untill you get used to it it is not as definite as a glock.
also as a common saftey rule your finger should be outside of the trigger guard when releasing the slide from locked. I do not know if it is common to not reset or not as I have never done this.