Have you tried other similar games like overwatch or valorent to see if you have similar issues with smoothness?
I feel like I've seen multiple people complaining about counter stirke and similar issues to what you are having
Listing your full system specs as well as a screen shot of timespy just to make sure your computer in general is performing up to par would be helpful.
There is a place on your profile to input system specs so people can see them and more easily help you on this forum.
Processor: AMD Ryzen 5 5600g 6 Core 12 Threads
RAMS: 2x8gb(KIT) Kingston FURY Beast 16GB DDR4 3200MHz KF432C16BBK2/16
Videocard: GIGABYTE GeForce GTX 1660 SUPER 6GB
SSD

IN WINDOWS AND 2 GAME): Samsung SSD 850 EVO 250GB
HDD1: TOSHIBA DT01ACA100
HDD2: TOSHIBA DT01ACA050
Monitor: Acer Predator XB253QGXbmiiprzx UM.KX3EE.X07 240hz
I tested Integrated grapics and my geforce gtx 1660 super 6gb.
And csgo fps benchmark average frametime(integrated grapics): 459 fps, and geforce fps: 565 fps,
Integrated grapics the game is much smoother, but still not 100%, if I use it with the video card, I feel a delay, if I turn on g-sync it's a little smoother, but there is a delay, and it really bothers me, if I turn it off, it doesn't feel smoother, but if I only turn on v-sync in the game, you can feel the smoothness better, but then there is input lag because v-sync causes input lag.