Low fps ingame with gtx 1660 !! Please help

[tatamata]

Hello guys, 3 days ago i did an upgrade on my pc, i changed some parts such like the psu and gpu, i had no problem with it and the computer started working perfectly. But now im facing some issues, i dont know why this is happening but somehow i think its cause the bottleneck, i will put down my pc specs so if you guys could give me a hand here or any advice i would be really thankful. I did update the latest driver too. Im not that type of guy who likes to put play games on high video settings, its the opposite, i was looking further to get a decent gpu and not an expensive one as well, a lot of my friends and people all around the world recommended me the gtx 1660 6gb. I like to play competitive, example i play a lot of fortnite and i am a scrim player, with my old gpu i couldnt play the game because i had a lot of crashes with it and i couldnt get through the game because of the drop fps and other issues. Now with my gtx 1660 i am quietly facing the same problems, can you just imagine it, i had a gtx 650 1gb, a total chinese firm garbage gpu and i had at least 60-100fps ingame, but now with my gtx 1660 as well im getting the same fps and this is driving me crazy, ive even decreased the resolution and lowered my videosettings, i should get around at least 120-160fps with my new gpu but all what im receiving is a 50fps fight battle. When im not fighting the fps goes to +90-100 but when im actually in a fight and there are a lot of people around i have extremly drop fps, like it goes from 110 to 40-50 immediately.... Same thing with the GTA 5, i somehow get the same fps on each video optionsetting, i mean even if i change the videosettings to ultra i still get 80-100fps same as low settings. I dont really know what to do so if you guys have something in mind go ahead and feel free, i could really use some help because this is very frustrating for me and it feels like i have still the gtx 650 inside my pc, im not seeing any big difference with it because i should, i mean you cant even compare a chinese 50$ gtx 650 1gb with ZOTAC GTX 1660 290$. Im really confused. Thanks for reading all this.

 

PC Specs
Processor: i5-4440 3.10 GHz
Ram: 8GB DDR3 (im chaning the ram too in a few weeks, to 16gb ram ddr3 1600mhz)
GPU: GTX 1660 6GB
Psu: Corsair CX550 +80bronze

[Helpful Tech Witch]

Wall of text much?

[Helpful Tech Witch]

Ok. When did you upgrade the GPU? Do you still get the same FPS with the old one? 

[tatamata]

Just now, TheTechWizardThatNeedsHelp said:

Ok. When did you upgrade the GPU? Do you still get the same FPS with the old one? 

Yesterday, i upgraded my gpu and changed my psu as well, i unistalled first the old drivers with the ddu and after that i switched to gtx 1660, i updated the drivers from nvidia website as well, everything thats necessary and required, but i dont know whats going on.

[Helpful Tech Witch]

1 hour ago, tatamata said:

Yesterday, i upgraded my gpu and changed my psu as well, i unistalled first the old drivers with the ddu and after that i switched to gtx 1660, i updated the drivers from nvidia website as well, everything thats necessary and required, but i dont know whats going on.

This is stupid, but do you have a frame limiter on in your settings? Also, check the settings.