Why did my monitor turn to 4k?

plutiper

Prominent
Feb 16, 2018
22
0
510
So I reacently got a new nvidia graphics card, I downloaded all the drivers and everything that I can download to imptove my experience and yesterday I updated my drivers since I couldn't see the nvidia control pannel, once it updated I opened the control pannel and I saw that it was showing a resolution of 3620x2036 and my monitor is supposed to be 2560x1440 and when I select the option of 3620x2036 everything gets really small but I don't see a big diffirence if any in quality and when I choose to change the size to 150% it makes the cursor very big and its annoying, why is it happening and what can I do about the cursor?
http://