i5 is pretty fast. The solution often isn't to throw more computing power at the problem. MS manages to soak most of it up regardless. One solution is to run a streamlined OS with no junk running.
I switched my son to a 4-core (4 thread) Ryzen, and it seems as fast as my 8 core older AMD (FX-8320 I think), with a lot of room for upgrading later. £50 for that processor. (Of course MB was another £50 and we got a good deal for fast 16GB DDR4). This upgrade was prompted by going into the realm of VR.