Not sure it's really relevant to OP, but I'll vouch for Moonlight. I use it to stream from my beefy desktop to my laptop/Linux tablet that both have weak little integrated GPUs. It's not perfect, need a strong internet connection, but it's 100x better than Steam's integrated version and for remote desktop access too.
A handy tip is that you can fake second monitors without any extra hardware so you don't have to give up a connected screen either.
I had to give up on Soulslike games. It's not that I can't do it, it's that every boss makes me feel frustrated for 30 mins to an hour and I'm cursing a blue streak, pissed off when I'm supposed to be having fun. Not worth it to me or my blood pressure.