[Gameplay] - Game System

Hi, I only play Co-op verse A.i. (for years!), and when I went to play PvP on Summoners Rift, every time I would encounter (attack) an enemy champion or be attacked for the first time, I would experience a large lag spike that I would never get in Co-op verse A.i.. After the first time, I would still get a spike, yet not actually noticeable to a degree of effecting gameplay, yet the encounter would still not be equal to Co-op verse A.i.

Yet this never happens if they were in bushes, as an encounter in the bush would always result in a delayed visual appearance instead of an actual latency in the sequence of priority of actions between me and the other player, yet the delay never feels the same as in Co-op verse A.i..

Is this an intended gameplay game system interaction, a limitation, or just me; a result of an lack luster computer system. Because it often feels like a game of rock paper scissors in sudden encounters, and I'm unsure if it's ok to exploit this (if it's the case) through the use of protobelt or flash to gain priority and exacerbate the priority through clever sequencing to effectively gain an addition crowd control skill.

So my question is: Is this a bug or skill, and is it ok if I were to (I dont know..) go out and start pentakilling people, or is it all just in my head?

-Thank you for your time concerning this matter.