Is Nvidia GeForce Now worth it? Does it work pretty well?

I'm in a bit of a pickle, the PC I bought my brother was waaay weaker than advertised (Sandy Bridge chipset so restricted to weak@#& processors. this was NOT disclosed on the website) so a lot of the games he purchased are too high spec for him to play.

I've read that game streaming can bypass this issue. Is this true? and is Nvidia Now the best option?

some info to help answer:

his PC has 16gb ram (money is tight), an RTX 3050 (saved up for 3 months), and an intel i7 2500

we have Starlink internet with an average speed of 160 to 230 MB/s (gonna upgrade to 450mb/s but that's a while away)

He is specifically wanting to play several single player games, only online multiplayer games he plays are ESO, Warframe, and Soulframe and his PC runs those fine. so I'm talking games like Crimson Desert, Final Fantasy XVI, and Fable remake when it comes out.

is streaming the answer until we can get a better PC for him? I really want to help him out but our budget is not great (it'd take almost half a year on my disability checks saving up for a 1000$ PC. and his checks from the state for caring for me almost completely go to keeping us afloat (I pay half the rent too, and our internet. so don't think I'm freeloading) but I could swing 15usd/mo with some planning.