why is blackjack payout variance so insane compared to slots

Whenever I switch between blackjack and slots, it always feels like the swings are way bigger on blackjack, even though the RTP should technically be better. With slots, yeah, you get those cold streaks, but the actual wins and losses seem more predictable over time. Meanwhile, blackjack has these crazy sessions where you can be up a bunch, then lose it all in like ten hands. I know skill and bet sizing play into it, but it feels like the variance on the payout side is on a different level.

Is there something in the payout structure or maybe the impact of double downs and splits that make blackjack feel more volatile? I always end up trying to size my bets differently but still hit wild bankroll swings, especially online. Curious how everyone manages the swings and if anyone actually prefers one style of variance over the other when deciding where to put their bankroll.