New i5-6600k installed

[dolphinsupreme]

Hi

I just replaced an i3 with an i5, and the process went fine. But I'm noticing that most of the times, my games' (like GTA v and overwatch) FPS is wildly fluctuating.
When I start a game, it'll either be:
1) a perfect 60fps
or
2) will literally bounce between 59-60 fps every second while I play (except when I'm in main menu).

Changing graphics does nothing to alleviate this.

I found one solution that said after every cpu replacement, I need to reinstall windows 10. Is this true? Should I reinstall Windows 10?
BTW, I did do a "Reset this PC" and wiped everything off after installing i5. Problem still persists. Help please

My components are:
80w power supply
i5-6600k (overclocked to 4ghz)
R9 380 4gb
Z170 Pro 4 Motherboard
Windows 10

Edit:
*Oops I didn't mean to select best solution. Problem isn't solved. Sorry*

 

[xFeaRDom]

This is nothing to worry about, I get the same, its more or less normal for when you have V-Sync enabled (So it runs at your monitor's refresh rate) You can disable this and it will probably jump further than 60FPS. But there's nothing to worry about.

 

[esco_sid]

Try running the CPU without the overclock see if things change.
Also disable vsync if you have it on.

 

[elbert]

Check your heat to see if the i5 is throttling. What heatsink are you using?
http://www.almico.com/sfdownload.php

 

[dolphinsupreme]

This is nothing to worry about, I get the same, its more or less normal for when you have V-Sync enabled (So it runs at your monitor's refresh rate) You can disable this and it will probably jump further than 60FPS. But there's nothing to worry about.

But to reply, I'm glad I'm not alone. you're right, VSYNC off makes it average like 75fps. But it looks awful on my monitor. It's why I've been trying to stabilize it

 

[dolphinsupreme]

Try running the CPU without the overclock see if things change.
Also disable vsync if you have it on.

I did turn off vsync, and it does go well above 60fps. But it looks bad on my monitor.
I actually overclocked it to see if it would fix it. Even at standard 3.4ghz, it does the same thing

 

[dolphinsupreme]

Check your heat to see if the i5 is throttling. What heatsink are you using?
http://www.almico.com/sfdownload.php

I'm using an EVO212. I tortured tested it and it's running at avg 65C

 

[xFeaRDom]

Try running the CPU without the overclock see if things change.
Also disable vsync if you have it on.

I did turn off vsync, and it does go well above 60fps. But it looks bad on my monitor.
I actually overclocked it to see if it would fix it. Even at standard 3.4ghz, it does the same thing

Basically V-Sync is forcing it down to 60FPS, so the way I look at it, you cannot stay at a specific FPS forever, even if you limit it to lets say, 30FPS, it'll drop to 29 every so often.

It's nothing major, I've had the same thing when I had VSync on and everything is still running fine, almost 2-3 years later (I always forget 😛)

It may be irritating but you'll learn that the FPS you get is an amazing thing, and you'll learn to ignore the fluctuation. Or at least I did.

 

[esco_sid]

Try fast-sync under nvidia options it usually works better than vsync.

 

[dolphinsupreme]

Thank you all for your input. I'm going to try messing around with AMD freesync (I can't use fast-sync because I don't have nvidia). If this fixes the problem permanently, I'll respond back with a solution