GPU not working

[njanghel98]

HI Everyone i have a lenovo legion y520 with the specs(i7-7th gen,128gb ssd+1td hdd,8 gb ram and gtx 1050 4gb ddr5 and from the past 5 months i m facing the issue of low fps like previously m laptop used to give 90+fps in rainbow six siege in ultra setting but now i only get around 20-30 fps and lowering the resolution to 720p helps me to gain around 60 fps but my friend having the same the laptop is geeting around 90+ fps .plus my motherboard have been replaced twice including the ssd also the service centre people usually solve the issue but after 1 month the same issues arises and with the fps i am not able to do any gpu work with lowering the graphic . having tried reinstalling the os,nvidia drives,disabling full screen optimization but none them help pls help if needed i can upload the benchmark of both the system.i don want to give the laptop to service people because they generally took 1 month to solve the issue but it again arises within 1 month so there is no point of giving them..pls need urgent help.Please ignore the language.
my benchmark video(gdrive)-http://
my friends benchmark video(gdrive)-http://

 

[spdragoo]

Have you verified that it's using the GTX 1050 & not the Intel HD graphics? That could explain the drastic drop in FPS.

 

[njanghel98]

Have you verified that it's using the GTX 1050 & not the Intel HD graphics? That could explain the drastic drop in FPS.

YUP I HAV CHECKED ITS USING GTX 1050 ONLY