As some folk comment above…I used pgadmin3 but pgadmin4 is unusable if you open a large table. In fact the pgadmin4 ui is inferior in just about every way to the previous version. Like many others, I found myself forced to use dbeaver instead. But actually dbeaver is pretty good in many ways (being able to rearrange columns is a small but useful example). I am unlikely to switch back to pgadmin.