basic strategy with h17?

Was running sims for a few blackjack hands last night with H17 rules and the basic charts started looking a little weird. Couple of hands like soft 18 vs dealer 9 or 10 - chart says one thing, my gut says another. Maybe I’m second guessing because every table I see now has some slight twist on the rules. Is the standard basic strategy actually off here or am I just being too picky? Feels like tiny rule tweaks mess with my head more than the actual odds do. Curious how others adjust, especially if you bounce between live and crypto tables.