Fortnite 4: 3 lags?

I have set Fortnite to the 4.3 graph and have since had several small to big lags in play. The game is barely playable with these jerks every 1 to 2 seconds. The game is so jerky, I'm only 14 years old and I do not have as much idea with the PC as the one or the other of the gamers who know the game inside out PC xD.Rainbow six victories So much continues and I can't stop it… Can someone help me LG John

In the graphics settings, set the window with margin. Full screen sometimes brings problems.

The problem is that stretch then goes away…