Sudden fps cap at 40

I've upgraded my PC to win10. Before than I used windows7. I haven't changed anything related to hardware, if only my pc should be faster than before. However suddenly I can't get more than 40 or 41 fps in every server. No matter if the server is full or empty. It's like the limit is set to 41fps.

Does anyone know what is causing this? Before I got 100+ fps easily. So I doubt in 1 day my hardware has become obsolete.

My pc is

-windows 10
-liquid cooled i7 6700k overclocked to 4.5ghz
-16gb ddr4 3200mhz ram
-gtx780
-Everything fresh installed on clean formatted SSD's
-All drivers updated

now the gpu is a bit old but not ancient and should keep up pretty easily, and like I said I had 100+ fps in every server easily a few days ago. This started happening since I upgraded to windows 10. Maybe there is a setting i'm missing somewhere. I obviously have lowered all Rust settings but it doesn't matter if I play on Patato or Fantastic settings or whatever I change in the performance settings, the fps is capped at 41fps.

Does anyone with win10 has experience with this?

The funny thing is if I alt+tab to windows and then go back it's way over 60fps but then a few seconds later its capped to 40/41fps again. I can also alt tab and have steam in front of the Rust game and I see 100+ fps but as soon as I maximize Rust it's back to 40.

 

100 fps in potato mode ?
i have a 1080 ti and i struggle to get a constant 100 fps in rust max settings.

 

The mode doesnt matter. If I play Patato of Fantastic it's both will go back to 40fps after a while.

 

I still have this issue. It started when upgrading to windows 10. What could possible be causing this? I have only experience with windows 7.

 

its not windows 10 as i play on windows 10 and dont have the same issue as u.

 

Then what could it be?

If anything my game should be faster than ever since I cleaned my entire PC.

I didn't have these issues last week on windows 7 and my PC was full of crap back then. Now my PC is almost empty everything freshly formatted and installed and all drivers are updated. Any way to troubleshoot this?

 

are your drivers upto date ?

 

Yes i've installed all drivers (motherboard stuff and graphic card stuff like nvidia experience and drivers etc). All up to date. I dont experience these problems with other games.

Also when I alt+tab I see the fps rise when I have like steam in front of the game but as soon as I close steam and have the game fullscreen it drops back to 40.

 

have u tried to turn off steam overlay in games ?

 

I just tried, eventhough I dont have a fps counter its still the shame shocky low fps probably around 40 still. So Steam overlay doesnt really do anything.

So weird how this is only in Rust. Could it have to do with DirectX version? Any way to switch to an older DirectX version maybe for Rust because I didnt had these problems on Windows 7.

 

Could anyone please help me or give me an idea? i've just reinstalled everything but its still happening. only in Rust. Other games work fine.

It will go back to around 40fps.

This must be a windows 10 issue but I dont wanna downgrade back to windows 7 just for Rust. What could this possibly be?