Constant low fps GTX 780 Ti

Thing is, it worked for months smoothly under 8.1, and the sudden performance loss happened 4-5 weeks ago. I am not sure if it was some Windows-/driver-update that caused something to mess up. Right now it works flawlessly again with a fresh install of Windows 8.1 64bit. By now I have also upgraded to the latest Nvidia driver and also the peripheral driver (Razer Synapse 2.0) is again installed with no sideeffects.

I run BF4 on win8.1 with no issues but I also run this when I think windows may have a issue or after a format after all updates and drivers are done , also I find win8.1 way more stable then win 7. But I remove all apps I will never use and use a local account and I stay away from windows store as well as set up my win8.1 to boot up like win 7 :womanlol: Save this below for down the road as it can save you a format. 

Test your windows for errors
This works in all windows O/S vista Win7, Win8 and Win8.1 windows system file checker :] Copy and past this to note pad and put it on your desktop. As open programs can give you errors when you run this.

...... sfc /scannow ..... ever hear of it if not your going to love this .... it will inspect all the important windows files as well as the windows DLL files. If windows system file checker finds any issues with the windows files and windows DLL files it will replace them. This little tool as well as the event viewer saved me and fully helped me fix my BF4 issues as well as saved my .... many a format since I found it. This is the best toy they ever put in windows :]

For win7 go to start left click in search type cmd and right click cmd pick run as admin

For win 8.1 right click start bottom left of screen and pick command prompt admin

1 - Open administrator command prompt and close web pages and programs like origin.

2 - Type or copy and paste in sfc /scannow and hit enter, This takes 5 min to 15 min SSD vs HD

3 - This can go one of a few ways ..... no errors ... it fixed some errors ..... could not fix all errors...... does not finish checking and errors out ....... and the last one could not fix errors at all :/

4 -After its done reboot and do it again even if you had no errors the first time or had errors, could not fix ... run sfc /scannow again and when its done a second time reboot. You need to do this a and get no errors 2 x in a row ...

5- So if you ran it 2x and no errors your safe you can stop now for now lol, If you had errors first time but not the second then run sfc /scannow again and when its done reboot. You need to get could not find any errors 2 x to be safe. If it still finds errors try and run it a few more times until it finds no errors 2x AND ALWAYS REBOOT BETWEEN RUNNING sfc /scannow

6 - If you get a message indicating that it can not be repaired and you ran sfc /scannow more then 3x in a row on win vista or 7 mm you need a format or try repair win 7 :/ But after format or repair and all updates are done run sfc /scannow to make sure your windows is stable same deal 2x error free reboot between them.

If your O/S is Win8 or Win 8,1 then you can run this next command / line in administrator command prompt. Sadly this does not work for win vista or 7 :/ It will restore the health of your PC and you dont lose anything and it will also fix errors in the registry :]

dism.exe /online /cleanup-image /restorehealth ------- ONLY works for windows 8 and 8.1

7 - When its done reboot