I haven’t tested it much myself, but I’ve been told that a lot of the lag spikes and screen delays on ‘scene changes’ (dock, undock, warp) these days is due to loading a lot of textures and extra graphics from all the “make EVE more graphically complex” initiatives CCP has done.
Having more graphics RAM, running EVE from a faster SSD, and sometimes fiddling with graphics settings (DX11 for some, as well as other settings) is supposed to reduce the long loading delays.