Bar lines in the schematic and pcb layout. What is the issue and how can i solve it

[dsa-t]

Schematic / PCB Editor Visual Issue - Lines

You really should configure Windows to use NVIDIA GPU for KiCad to get high performance: How to set default GPU for apps on Windows 11 - Pureinfotech If you want to use Intel GPU, then you have to update Intel Graphics drivers. Fallback graphics is slow and is the last resort if using the other two options is not possible for some reason. This option should not be recommended before the other two.