junior cousin PC lag when playing CS: Global Offensive

[RyuOrKen]

Hi all, as mention subject above, lag details:
~ slow graphics loading
~ slow movement in game
~ despite using fibre broadband (1gbs)

I guess is need to upgrade gfx card, anyway here's the rig specs:
Intel Core i5-4460 3.2ghz, Asus B85M-E, Intel HD Graphics 4600, G Skill DDR3 8gb x 1 (PC3-12800U DDR3 1600), Acer K202 HQL (19.4"), WD 1TB SATA 7200rpm, TDK DVD RW, Realtek sound card, Win 10 Pro

Above are the specs I can obtained, PSU need em to open up the side door of the chassis.

Please recommended a suitable gfx card for his mobo and rig, thank you.

 

[Phen8210]

gtx 950 =), if 750ti will bottleneck the cpu.. cannot get the best fps.

cs go gtx 950 above no difference, only cpu will affect from then onwards.. might vary under special conditions.

Please state the PSU model and Casing

 

[RyuOrKen]

gtx 950 =), if 750ti will bottleneck the cpu.. cannot get the best fps.

cs go gtx 950 above no difference, only cpu will affect from then onwards.. might vary under special conditions.

Please state the PSU model and Casing

PSU model & casing have to wait for them to be home.
I obtained the specs remotely
Thank you Phen8210.