bad gaming performance

So I have an Alienware m18 4090 13th Gen Intel(R) Core(TM) i9-13980HX 2.20 GHz with 64 GB of RAM,4 TB of storage, the system is Win11 Pro. somehow while I'm in games such as Cyberpunk 2077, The Witcher 3, War Thunder, etc... the presetting is high since I got a high-performance one, but the...

PC r9 285 2gb power color i3 3210 ram 6gb Resolution 1050x1680 win 7 ultimate i noticed a problem while plaing games (mostly open world) when i move for a while in one direction (cousing rendering new objects and textures) my game freezes for few sec (1-3 up to 30 in far cry 5) and lower...