Low FPS on some games, but other games get high FPS??

[marcodevito360]

My MSI GS60 laptop specs:
NVIDIA GeForce GTX 965M
Intel i7-5700HQ CPU @ 2.70 GHz
Memory Ram 16GB
Current resolution , 3840×2160
Windows 8.1
1TB+ 250 GB Hard drive ssd.



Ok so Im a casual user, I use my laptop to play usually only games. And I would usually get like 60-100fps on fortnite and 70-200 on csgo or overwatch.... But suddenly last week I'm not sure what I did but my games had low FPS all of the sudden, right after the Fortnite season 5 update. When I open game the screen would become like really small even in 'Fullscreen' mode, like the screen was the size of a iPhone 8+ and the rest of the screen was just black, but I would be getting 100-200fps, until I try to make it full screen again then it becomes 20-50 FPS on fullscreen. This is happening to my Rainbow6 siege too. Exact same thing. But I tried other games and CSGO, OVERWATCH, TF2 are running SMOOTHLY 70-200fps.
I'm not sure why, I tried restarting, updating, reinstalling the game.... And alot more. Yes I've lowered graphics in-game to lowest settings, not working. Maybe it's my CPU? I'm not sure, but my laptop is already about 3 years old so could be.

Thanks In advance.

 

[Lutfij]

Make sure your laptops BIOS is up to date. Also try uninstall your GPU drivers and reinstall them after verifying you're on the latest revision from Nvidia's support site.

 

[marcodevito360]

Make sure your laptops BIOS is up to date. Also try uninstall your GPU drivers and reinstall them after verifying you're on the latest revision from Nvidia's support site.