Well at the single deck or smaller shoes the chances of card dilution is strong with more players. Wished I'd joined this forum BEFORE finding that out. Experience being a harsh teacher.
Was sitting at a single deck table a couple years ago with multiple players and simply getting killed regardless of the TC. Didn't matter if it went to plus eight. or even ten. By the time the second card came around again all the high cards had been played out.
In shoe games this deck stays "warm" longer. Vice versa it also stays cold longer...