Seems like screen tearing to me.
Can you share your laptops settings, resolution and hz, and your ET settings for the same(resolution and hz).
Also, more of a fps deal, but what is your battery settings on your laptop set to?
Are you using the laptop monitor or an external monitor connected to your laptop?
that's they way it is. It's the gun. Not your character itself.
Your settings, if everything is set to 0 as mention above, should be good.
In ETL there is a setting to have no animation of any guns (which I see you have turned off when you shoot/toss nade in the first video). That setting does not exist in Silent. But you can do cg_drawgun 0 to hide your gun.
Sorry for my misinformation Hyness, I do not actually use it a lot. Only to change to engy for a clutch defuse. And when I tested it, I used on ETpro. When I played silent it worked changing to engy =). Time to update the config I guees 😃