Razer Blade 15 (2018) performance issue

I bought my Razer Blade 15 2018 (Advanced model with GTX 1060 MAX-Q)and I've been using it for about 8 months. Recently my Razer Blade is struggring with perfomance issue while playing games(especialy Fortnite).
It lags very badly and it makes game almost unplayable with avarage framerate around 30FPS. So I trided following to see if it sloves the problem: reinstalling Forenite and my graphices driver,Rebooting the system and updating my Windows10 to latest version (whitch is wired because I'm stuck with version 1803). It's huge problem for me because it makes game almost unplayable. Does anybody have solution to this problem?
Please help me.(Sorry,I'm not good at English so please just ignore the mistakes with grammar)

 

Hey! You might want to try running a complete computer scan. Some viruses and spyware can cause performance issues such as freezing and lags. If you find this ineffective, feel free to drop me a PM along with the serial number of your Blade. I'll find better ways to fix this for you. Cheers!

 

Are you playing with an xbox controller over bluetooth?

 

ISSUE FIXED! Thanks guys!

 

Good to hear! Feel free to give the people here a tap should you be needing help. Keep safe!