Client-side rendering probably isn't faster than server-side rendering in terms of latency, but it is cheaper. You save on server processing and network bandwidth.
Rendering speed isn't the reason server-side templates feel "slow" though: if you do server-side rendering then every change of state on the client needs to round-trip to the server in order to fetch a new HTML representation. Client-side rendering lets you "cheat": just render the new state and synchronize with the server after the fact.
Rendering speed isn't the reason server-side templates feel "slow" though: if you do server-side rendering then every change of state on the client needs to round-trip to the server in order to fetch a new HTML representation. Client-side rendering lets you "cheat": just render the new state and synchronize with the server after the fact.