1920x1080 displaying as 1920x1440

Can anyone help me please?

I accidentally selected 2560x1440 now when i select 1920x1080 it displays as 1920x1440.

I have tried everything i can think of to fix this, deleted profsave_profile and let it create a new file, also deleted the cache, neither worked. 

Is there something else i can try? i have checked in the nvidia settings and have no clue how to fix this, my work around for now is to set a lower resolution and hope someone gets back to me.