Especially when its HOT out…why?
People dont realize the other factors involved and often blame the game - DSLs(and other connections) work over COPPER WIRE and the signal(resistance in copper wire) degrades as heat rises - when temp increases it can make a difference in online play(in SFxT you can see skipping, with AE netcode will have more input lag).
You can see skipping(rollbacks), that are obviously noticed(SFxT), that correct input to the proper timing, or input lag in AE(time before your moves come out)
Repowering your modem resets that connection to optimal performance(its called syncing), and until you reboot it can suck especially if its been a while and its hot out.
ALWAYS REBOOT YOUR INTERNET DEVICES BEFORE GOING ONLINE TO PLAY.
3 seconds is fine…
IT CAN make a difference especially in the summer when it is very hot outside and you have hundreds sometimes thousands of feet of copper wire between you and the source of your internets, along with very precisely and optimally tuned electronic equipment like DSL modems which sync the line and signal at the time of power on.
Simple, yet effective way to significantly reduce lag online, just be sure to do it** immediately before playing**, and if you been playing hours, take a break and a quick repower can help keep you solid.
OF COURSE - this will not work with everyone all the time, it helps for me and has for others that I have played real time. If thats not enough for you to try, then I cant help you!
Also note heat may not be the only factor at work here, repowering can help for other reasons as well.