The showrunners also messed up Cirri's first kill - in the books she is found in the desert by that group or mercenaries/bounty hunters & she's with them for a while. They are horrible to her, teasing her with food & water, threatening her etc hence by the time she's in that bar bit & the Rats arrive, she's much more feral & intent on revenge. In the show it's just, oh they found her & next thing she's disembowelling the guy - it's a much longer draw in the book to show her turning into Falka.
& if the showrunners think they can just parachute Hemsworth into Geralt & carry on the storyline without any change, they're dreaming!
I think I'll still to the game, books & season 1.