FPS drop on League of Legends

[Quan_3]

Hi, i recently bought a MSI GE62VR 6RF

This is the specs :
i7-6700HQ
GTX1060 (6GB)
8GB RAM
SSD 960 evo
( you can find more specs online )

The game i played is League of Legends (most of the time )
when entering the game , turn off the vertical sync , max setting i can get about ~80 FPS when standing doing nothing, moving around. farming.,,,
I usually turn on vertical sync to get 60hz because my screen can only display 60Hz
but when entering combat ( a lot of combos ) it drop to 40~50 FPS and get back to 60 when moving out of combat.

i know that 1060 is a really powerfull VGA but why im getting this problem, can anyone help me out ?

-The NVIDIA Control Panel ( i turn on the NVIDIA for LOL )
-Power Option : high performance

 

[dontlistentome]

Is the monitor connected to the videocard output and not the motherboard output?

 

[Quan_3]

Is the monitor connected to the videocard output and not the motherboard output?

this is a laptop ( MSI GE62VR 6RF )

 

[dontlistentome]

I must have been sleepy when I wrote that, it's obvious you have a laptop, d'oh!

Here's how I understand vsync, and why it may be your problem. With vsync ON, for it not to actually give you lower than fps than you could have, your system has to be powerful enough to ALWAYS have a greater framerate than your refresh rate. If your refresh rate is 60hz, then your framerate always has to be 60fps or higher. If your fps drops below 60fps, then you will get those big dips.

This is why gsync and freesync are a thing. They are ways to solve this problem.

So your choice is to run with vsync off and not suffer those drops but possibly have screen tearing, or run with it on and see those framerate drops but not have any screen tearing.