same slot paid less on mobile than desktop unless im reading paytable wrong

so i usually spin this one slot on my laptop, know the symbols and payouts by heart now. last night tried the same game on my phone since i was too comfy to get up. hit what should have been a pretty solid line, but the payout was way lower than what i normally see. i checked the paytable right there, looked the same, but maybe i missed something in the fine print or mobile version?

do casinos really adjust payouts by device or is this more likely just my memory playing tricks on me? or does variance just mess with payouts to look off when they're not? curious if anyone else has spotted this kind of thing switching between devices.