Any PC wizard out there? Performance issues in battle.

This is not a bug, but I assumed that this subboard would be the most appropriate for this thread.

I can play a lot of high end games like witcher 3 or metro exodus with relative ease, but I experience stutter and sometimes total shut down freezes when playing LoL. This mostly happens during fights when a lot of abilities get thrown around. Taliyah's combo for example kills my PC.

I'm pretty sure that the problem is on my end (some outdated component probably) but don't know what exactly LoL is using that taxes a pc the most.

Could there be hard drive problems (my pc becomes a snail when lol looks through it for files for example) or is lol very taxing on RAM? What could it be?