Frame Rate drops with GTX 780

[Surreal]

HI

I wonder if you will be able to help me with this.

I bought my Gaming PC 2 years ago and there seems to be an intermittent problem with the frame rate when playing games.

Games will usually run fine for the first 30 minutes or so and then the frame rate would suddenly drop.

Example: When playing Overwatch, I would get a frame rate of around 170fps for one match, but after that the FPS will drop & hover between 25 - 50 fps with small fluctuations as I am playing (sometimes it will be between 40 - 70 FPS etc). This would happen even if I were playing the same mp in the same areas.

Could someone please advise on what I can do to fix this? this happens on pretty much all games I play & lowering the graphics settings does not help with the issue.

My PC Spec is below:

Case COOLERMASTER CM STORM TROOPER - GAMING ENTHUSIAST CASE
Processor (CPU) Intel® Core™i7 Quad Core Processor i7-4790 (3.6GHz) 8MB Cache
Motherboard ASUS® Z97-A: ATX, USB3.0, SATA 6GB/S, SLi, XFIRE
Memory (RAM) 16GB KINGSTON HYPER-X FURY DUAL-DDR3 1600MHz, X.M.P (2 x 8GB)
Graphics Card 3GB NVIDIA GEFORCE GTX 780 - 2 DVI, HDMI, DP - 3D Vision Ready
2nd Graphics Card NONE
3rd Graphics Card NONE
1st Hard Disk 120GB Samsung 840 EVO SSD, SATA 6Gb/s (upto 540MB/sR | 410MB/sW)
2nd Hard Disk 500GB WD CAVIAR BLACK WD5003AZEX, SATA 6 Gb/s, 64MB CACHE (7200rpm)
1st DVD/BLU-RAY Drive 24x DUAL LAYER DVD WRITER ±R/±RW/RAM
Memory Card Reader INTERNAL 52 IN 1 CARD READER (XD, MS, CF, SD, etc) + 1 x USB 2.0 PORT
Power Supply CORSAIR 750W RM SERIES™ MODULAR 80 PLUS® GOLD, ULTRA QUIET
Processor Cooling Super Quiet 22dBA Triple Copper Heatpipe Intel CPU Cooler
Sound Card ONBOARD 6 CHANNEL (5.1) HIGH DEF AUDIO (AS STANDARD)
Wireless/Wired Networking 10/100/1000 GIGABIT LAN PORT - AS STANDARD ON ALL PCs
Power Cable 1 x 1 Metre UK Power Cable (Kettle Lead)
Operating System Genuine Windows 7 Home Premium 64 Bit w/SP1 - inc DVD & Licence™
Monitor IIYAMA E2473HS 24" LED WIDESCREEN, 2 HDMI/DVI-D 1920x1080

thanks in advance

 

[Wozza63]

Check your temperatures. It may be overheating and throttling the GPU to prevent damage or shut down. If they are too high you may need to clean out the PC from dust build up if you haven't done so recently.

 

[Surreal]

the temperatures are fine (hovering around the 60 - 70 mark), & I checked the inside of the PC & there is not much dust at all (I clean it regularly). the thing is this will happen on older games too which don't require heavy use of the GPU.

 

[Oussebon]

Working checking CPU temps as well (if you hadn't already done so anyway)

I'd also set the Windows Power Plan to High Performance:
http://www.sevenforums.com/tutorials/778-power-plan-settings-change.html
http://www.sevenforums.com/tutorials/292971-pcie-link-state-power-management-turn-off-windows.html

Set the GPU Power to Max Performance
http://nvidia.custhelp.com/app/answ...ent-mode-from-adaptive-to-maximum-performance

If that fails, which driver version are you on? Some of Nvidia's most recent ones have been a bit wibbly for a few people. Perhaps remove the driver with
http://www.guru3d.com/files-details/display-driver-uninstaller-download.html
And try something like 362.00