PSP question, old I know, but humor me

So theres a few psp games i've been wanting to play that never got added to the digital store, so i can't just use my vita. that means umd is the only way to go at it

now, I have an original psp, but i always hated it because there was just something so messed up about the display. its like it has too low of a refresh rate or something? like when you move quickly you can see ghosting of the stuff in the game. its not just my psp either, all my friends with psps had the same issue

did sony ever fix this issue with later psp iterations? and i mean ones that could actually play umd, so not a psp go

IIRC PSP 3000 has a brighter screen than all the other models and it doesn't have any ghosting issues whatsoever(at least i don't have any).