But, Valve literally pick up and implement what Overwatch did and input buffering is not new as well since Rocket League used it for a long time, also partially thanks to Overwatch dev if you watch Psyonix's GDC talk. So yeah, many game dev does innovate through out, and don't credit everything when Valve implement what other did and maybe make other improvement along the way. That's how everyone improve, by learning from each other.

Agreed, it's a good system and is more accurate than 128tick, even though it's not perfect. E.g. the client still only shows the muzzle flash on the next tick, so up to 16ms after the shot was actually fired [1]. This is probably one of the reasons some people can tell the difference between 64 and 128tick, as the game might feel more accurate, even though the hit registration isn't in any meaningful way.

[1] https://www.youtube.com/watch?v=4jfo6sWhLFs

The events that are sub tick (not all are) aren't more precise with 128 tick, since they are already time stamped with the exact time.

128 tick still has advantages for game feel and things like peekers advantage. Altough the latter is mostly down to each player's ping in the match.

The 4 reason's I've gathered why Valve probably doesn't want 128 tick servers are:

• server cost
• people with slow internet
• people with slow computers
• smoke lineups are different on 128 tick vs 64 tick

The last point is really annoying with CS:GO since I have to learn different smokes and have to remember for which tickrate they are. Since the physics are calculated tick by tick, it's difficult to make smokes the same on different tickrates.

A tick is like a snapshot of the game state, i.e. where each player is, what they are doing, where they are looking etc. The tick rate describes how often this game state is calculated by the server and sent back to the clients (our PC's).

The main reason why CS:GO 128tick server are so much better than 64tick server is because in Global Offensive the server doesn't know exactly when each player pressed a button. The server only knows the tick in which a button was pressed or a head was shot. This leads to a tiny bit of discrepancy between what you actually did and what the server thinks you did (e.g. you were on the head but the game thinks you missed since in a single tick the player moved out of your crosshair). 128tick makes this more accurate.

Btw. this is also the reason why we need jump throw binds for smokes, since the jump throw only works if both buttons are pressed in exactly the same tick. Not even pro players can do this consistently.

CS2 provides the server with the exact time at which you shot, at which time your crosshair was on the target and at time you pressed a button. This means the hit registration is exact and doesn't happen only every 16ms or 8ms on 128tick servers. Thus CS2 64tick hitreg > CS:GO 128tick. But there're other factors in play which decide how the game feels, which is why 128 tick still has (minor) advantages in CS2.

Hopefully that helped. If not, feel free to ask and I'll explain as far as I know. This topic is still developing and there's much misinformation floating around.

Buncha people think they know more about programming netcode than the developers.