I love hitting with pitch speed 10 as it feels more authentic and rewarding to me that way. You will get used to a given pitch speed after putting enough practice into it. Lowering it definitely helps by giving you more time for pitch recognition, but even at a given pitch speed setting, you'll have to deal with pitchers throwing in high-90s one day and then mid-80s next, with which the slider won't help you closing the gap. Between max and min pitch speeds, you'll be adjusting for about 10 - 20 mph, in terms of how you visually feel those pitches travel.
Sorry, I'm not sure about how sliders are set for online play; never played online.


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