Why does my fps randomly drop and games stutter even when i set a fps cap it drops?

[Abby_2]

Zotac Gtx 1080 AMP Extreme
i7 6700k (non oc)
16gb 3000hz g.skill ripjaw v
Gigabyte z170x-Gaming 3 mb
Asus 60hz 1080p monitor
Evga P2 1000w PSU
Sennheiser 363D headphones with sound blaser usb sound card
Corsair k95 keyboard
Razer Deathadder mouse
noctua dh14



Problem:

I run my pc up all working well, I get in a game for example Rocket league and go into a 3v3 match. a solid 250fps since its the fps cap. First game is completely fine. I then get to the second game and however what was 250fps solid smooth is now a un smooth sort of stuttering gameplay and I know for a fact when that happens if i look at the fps it has dropped to about 160 then spiking to 250 back and forth. Gpu usage has now dropped along with a core in the cpu usage rising and many other factors. Lost a picture of all the changes.

Gpu usage doesnt go above 40% Cpu usage doesnt go above 30%
Temperatures are all under 60 degrees Celsius

Even in some games if I have a solid 100fps + and I set a fps cap to 60 it still drops to about 50 which it would never do if it was not capped which is very weird.

In benchmarks like heaven and firestrike the results seem completely normal so its only when I actually play the game it is messing up randomly


Thanks for all the help guys!!

 

[Abby_2]

MERGED QUESTION
Question from Abby_2 : "Randomly low performance spikes in games with stuttering gameplay?"

Zotac Gtx 1080 AMP Extreme
i7 6700k (non oc)
16gb 3000hz g.skill ripjaw v
Gigabyte z170x-Gaming 3 mb
Asus 60hz 1080p monitor
Evga P2 1000w PSU
Sennheiser 363D headphones with sound blaser usb sound card
Corsair k95 keyboard
Razer Deathadder mouse
noctua dh14



In all games it varies for example rocket league will work perfect 250fps capped and then randomly will spike to 160fps making gameplay stuttering and the usage going up and down

In fallout primal game works fine for a bit and then randomly the gpu usage will spike to about 70% to 80% making the game stutter and low fps and then back to 99% for a few moments then repeat.

Other games stutter right from the beginning making it nearly unplayable. Temperatures dont go above 60 on both gpu and cpu

 

[RARRAF]

MERGED QUESTION
Question from Abby_2 : "Games randomly start stuttering bad and fps drops and spikes constantly !"

Zotac Gtx 1080 AMP Extreme
i7 6700k (non oc)
16gb 3000hz g.skill ripjaw v
Gigabyte z170x-Gaming 3 mb
Asus 60hz 1080p monitor
Evga P2 1000w PSU
Sennheiser 363D headphones with sound blaser usb sound card
Corsair k95 keyboard
Razer Deathadder mouse
noctua dh14



Problem:

I run my pc up all working well, I get in a game for example Rocket league and go into a 3v3 match. a solid 250fps since its the fps cap. First game is completely fine. I then get to the second game and however what was 250fps solid smooth is now a un smooth sort of stuttering gameplay and I know for a fact when that happens if i look at the fps it has dropped to about 160 then spiking to 250 back and forth. Gpu usage has now dropped along with a core in the cpu usage rising and many other factors. Lost a picture of all the changes.

Gpu usage doesnt go above 40% Cpu usage doesnt go above 30%
Temperatures are all under 60 degrees Celsius

Even in some games if I have a solid 100fps + and I set a fps cap to 60 it still drops to about 50 which it would never do if it was not capped which is very weird.

In benchmarks like heaven and firestrike the results seem completely normal so its only when I actually play the game it is messing up randomly


Thanks for all the help guys!!

right click search "power" power settings "power options" high performance just a thought