Keep playing cyberpunk it gets WAAY better after Act 1.

You sure you’re playing on SteamOS? I got stable 60 in 4 on mid-high settings, but in 5 it’s more around 50 with drops to 40. GTA4 PC port is notorious big it runs better on Linux because of DXVK (it works on Windows too, but it’s default on Linux with Proton)