It's time to deal with the bane of online multiplayer games: Lag . Previously Command & Construct just displayed raw network updates - as soon as a message arri...
I guess that I'm spoiled in the USA. Do people still use 56K modem dial-up? However, I glad you are compensating for V.90, MNP, v.35, and v.42bis protocols.
This has less to do with a dial-up modem and more to with infrastructure and engineering side of the internet (not just the Web). Using an outdated modem mainly determines the speed of data transmission per second, which isn't very significant for an online game. Most games only use around 50 KB/s. Even a high quality voice call is possible with that much bandwidth. But since a voice call is also a realtime interaction, the issues mentioned by Ashley still applies to it.
Btw until 2020 (and beyond), millions of Americans were still paying for a dial-up subscription! So statistically yes, people do use it and your country's infrastructure (and tech literacy) isn't as advanced as you think. Maybe you're just one of the fortunate ones with access to 5G and Fiber connections.