Question Double down rescue rule versus basic strategy

picassocat

Dormant account
I’m playing an online BJ game with these rules: 8 decks, S17, D9-11, DAS, peek, late surrender (on any amount of cards even split aces) and double down rescue. Normally (4 decks or more), one would not double 11 vs A or 9 vs 2 in a S17 game, but since you can rescue your double, why wouldn’t you double down on these? Bottom line question: does the double down rescue rule alter basic strategy in any way?
 
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