some fliker kind error on my viewport

Hello Sir
i am facing some error on my UE4 display…

there is a bit flicker or edge split error whenever i have some movement in project…it is like mesh edge is splitting for some time whenever i move my view.it is settled after i pause my view to somewhere and started again when i move. though i am having your small house without texture which is very low poly…i tried other firstperson projects as well but in that projects i am facing the same problem as well. Though i have powerful system,and having frame rate of 120 fps.

i have tried almost all the settings as much i can from youtube videos but there is not any specific video for such error…i want to send you a video by screen recorder as well but on screen recording,such error is not visible…it is looking fluent in that video so i guess there is something on the engine which i can’t figure out…

i have tried to uninstall all the versions and editor and reinstall it…but still it is there in every version.

My system specifications:

Intel(R) Core™ i5-8400 CPU @ 2.80GHz 2.81 GHz

32 gb RAM

Nvidia RTX 3070 ti

Can you do a vid?