GTX 660 lag in games on cold boot

Hello once again,
Ever since I bought my GIGABYTE GTX 660 I have been having problems with it. As of now, there is only one big issue with it. Whenever I boot up my computer, performance is poor. I'm talking 30-40 FPS in a game like MW2, while 90 is normal. The only way I can manage to fix this, is by rebooting. And I mean actually clicking the "reboot" button in windows. Just shutting down and then powering on again straight away does not help at all.

I have actually upgraded my PSU and memory. Problem occurred before and after system changes. I was thinking about RMA'ing this SOB, but first I'd try it in my dads computer. The card worked absolutely fine without any sort of inconsistent performance on benchmark.
I have also done a full system reinstall quite a while ago, but the problem persisted.
Only thing I can think of now is a BIOS update, but I don't want to if I don't have to. If I will update I will let you know if it helped.
Thanks :)

Some concrete results:
Furmark 1280x720, no AA:
Cold - 49 FPS
Warm - 51 FPS

Unigine Heaven 4.0, Ultra Quality, Extreme tess, 8x AA:
Cold - 23.0 FPS
Warm 26.8 FPS

Mate probably too obvious but have you tried downloading the latest driver this card??
GIGABYTE - Graphics Card - NVIDIA - PCI Express Solution - GeForce 600 Series - GV-N660OC-2GD

A SFC and chkdsk would not go amiss either in my mind anyway but the choice is yours.
SFC /SCANNOW Command - System File Checker

Disk Check

Plus another obvious one is have you checked the temps too??

ICit2lol said:

Mate probably too obvious but have you tried downloading the latest driver this card??
GIGABYTE - Graphics Card - NVIDIA - PCI Express Solution - GeForce 600 Series - GV-N660OC-2GD

A SFC and chkdsk would not go amiss either in my mind anyway but the choice is yours.
SFC /SCANNOW Command - System File Checker

Disk Check

Plus another obvious one is have you checked the temps too??

Yes, I am running the latest 326.80 nVidia Driver. Should I try the one on GIGABYTE's website? It seems kinda outdated to me. SFC and disk check both fixed some files but not my problem.
It's unfortunate but my problem just doesn't want to be fixed

Oh, and the temps pretty much never exceed 60°C

Hmm the NVidia one should be the driver - I run Asus NVidia cards via theNVidia drivers so I don't think it is the problem.

The BIOS I am not really sure - I suppose you have redone the chipset updatefor that board?
MSI Global ? Motherboard - P55M-GD45 64 the BIOS update is there too but try the chipset driver first I personally don't like messing with the BIOS unless I know it is something to do with it.

Now you recently upgraded the RAM too you could try a memtest I suppose - itpossibly could be the stick/s it might be the slots hence the board are faulty.
This is a lengthy process though and you need to make a bootable disk and let it run for at least 8 passes unless you start to get errors straight away.

RAM - Test with Memtest86+

Plus you might first run a security scan using these just to rule anything out in that area if you haven't already.

http://www.superantispyware.com/

http://www.malwarebytes.org/products/malwarebytes_free/
http://www.bleepingcomputer.com/download/adwcleaner/ download from bleeping computer

spioner said:

Yes, I am running the latest 326.80 nVidia Driver.

Try going back to 320.49 WHQL.

Hmm looks like it mate I am wondering why you are using a sweeper for the drivers though?

Drivers for the GTX660 there are these refs GIGABYTE - Graphics Card - NVIDIA - PCI Express Solution - GeForce 600 Series - GV-N660OC-2GD and
Drivers | GeForce < I couldn't find Dutch in the language section bit I am guessing as you know English that is not going to be a problem. The board drivers are up to scratch so they should not be of consequence.

NO mate the Gigabyte BIOS I suspect you may have clicked on the download type button and saw that there. The only one you must use is the board manufacturers (MSI) BIOS download.

As a matter of course I am very wary of updating the BIOS unless I am 100% sure it is safe and that I have a back up copy of what there is already in case the BIOS can be rewritten back.

The driver from NVidia is the one to use in that instance and Boozad has quoted it already.

The only other thing I can think of to do is try it again on the other machine if it still works ok then maybe there is something wrong with the slot it sits in your machine.

You could try cleaning it by getting small strip of old credit card (about 1/2 inch wide with the corners nipped off) cut a small piece of lint free cloth over the end of it. Moisten it with only just enough iso alcohol or similar and gently drag the strip along the slot to clean the contacts.
See pic bit rough but you will get the idea the cloth should be long enough for you to keep a tight grip on it up the length of that strip. Sounds a bit crude but works:)