every time i try to make a line or erase, it takes a long time to load and doesn't want to show the cursor, this phenomenon happened in versions 3.1.2 and 3.1.3
Does the problem go away if you disable opengl? If so, your display driver is buggy and probably outdated. See https://docs.krita.org/KritaFAQ#Krita_starts_with_a_black_or_blank_canvas_and_nothing_changes_when_you_try_to_draw.2Fshows_a_black_or_blank_screen_on_my_Windows_system_with_an_Intel_GPU
Please report the exact version of your display driver and the type of your intel graphics adapter.
i auctually fixed it by checking "allow opengl Logging" and everything is fine now, thank you for your help! <3
*** This bug has been marked as a duplicate of bug 360601 ***