Are you asking if speedruns with lag, will be accepted or rejected? That depends on the game and its rules, and the nature and severity of the lag.
Slight lags spikes mostly shouldn't be a problem, as long as it's clear what is going on in the run. Bigger lags that majorly slow down the game, or make the video unwatchable, have a high chance to be rejected.
In some games there is an in-game timer, so lag shouldn't matter much as long as the timer is accurate. In some games, there are glitches that can happen if you intentionally lag the game. Then it's a matter of playing glitchless or not, if the lag is allowed.
Also, feel free to ask questions in your native language. This is a site with a worldwide userbase, there'll be someone here who speaks your language :)