Windows 10: GPU usage drops randomly to 0% when gaming

My GPU usage drops randomly from 70-100% to 0-10% when im gaming. especially when playing FH4, creates severe lag spikes. Its really annoying. Anyone can help me?

:)

 

GPU usage dropping to 0%

[Solved] GPU usage dropping to 0%

After totally wiping and reinstalling windows it now works!
MY Steps:
1. Format HDD and during setup choose the option to not allow windows to install updates/drivers.
DO NOT LET WINDOWS AUTO UPDATE
2. Create Restore point. (Fallback)
3. Install Chipset Drivers (Since you predownloaded them)
4. Install network driver
5. Install your GPU driver
6. Install DX11 (Or Whatever)
7. Install whatever game you are playing (BF3) Let it install whatever it needs to to run. (Net Framework etc.)
8. Run bf3 campaign or multiplayer.
9. Be amazed.
10. Create a restore point. (Fallback)
11. Update windows.
12. Breathe a sigh of relief.
13. Install whatever you need to.




I have this issue that whenever i play a graphic intensive game my GPU usage drops to 0-10% every so often. I have no idea what to do. I've already moved it to a different slot, tried different cables, overclocking, underclocking. Everything... Can someone help?
PC Specs:
MOBO: Asus Z87-Deluxe
CPU: Intel i5 4670k
GPU: MSI GTX 660TI PE
RAM: G.Skill Ripjaw 4GB x2
SSD: Samsung 840 Pro 120GB
HDD: WD Blue 1TB 7200rpm 64mb
PSU: PC P&C 750W (Pretty old though ~4 years)
Images of what im talking about:

 

CPU and GPU usage high, fps drop on games

Hi. I usually have around 100fps at Player Unknown Battlegrounds and my CPU usage is normal. From a month or so I get fps drops like 50-100fps and game feels laggy.

Also, when I open the task manager the CPU and GPU usage is really high around 90, 80% and then suddently drops to normal values like 5%.

I checked igfxupdate.exe Windows process - What is it? but it doesn't resolve it.

I noticed that a service svhost is very high on usage, what can I do?

Thanks in advance.

 

GPU Usage drops to 0%

After 20 min of gaming every 1 minute (IMAGE INCLUDED) gpu usage drops to 0% for 1 sec.VID drops to 0. Fps drops from 50 to 1fps. Gpu clock drops from 1137 to 1072 MHz. CPU usage drops from 40% to 15%. Voltage seems ok. It appears for 1 sec and after that it's working fine for ~1 min.
Played Outlast 2 everything was fine. Games with less requirements as cs go are working properly. FPS drops in Hitman, Sniper Ghost warrior 3, Mass Effect Andromeda.
ITS NOT TEMP ISSUE. PC is stable (benchmarking for over 30 mins). Drivers up to date.

Specs : (DxDiag INCLUDED)
GTX 760 by evega
Intel 2600k
RAM 8 GB 1333
PSU Modecom MC 620 carbon 620w
Asustek p8z68-v vx

What I tried:

Underclocking, undervolatege/overvoltage, forcing fan to 100%
Update/reinstall drivers
Opening case (PCI slot, cables, dust etc. check)
BIOS (fixed voltage (tried auto also), C1E is disabled, turbomode disabled)
Diagnostics - mdsched (ram), dxdiag, viruses
Closing all background applications
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