Really blurred and confusion

Feels like I can't think or I'm forgetful plus my speech isn't as clear and I'm not as articulate. My vision is weird like it's blurry and peoples eyes look really shiny to me. I feel I'm zone out and if I'm talking to someone in front of me I find it very easily to block out people that are beside me.

I sometimes find it easy to block out people when they talk because my hearing isn't clear. I has been going on since October, and the way I feel and my field of vision is like I'm slightly drunk or on drugs. It's like I see things and then they register 2 seconds later or something. It got a little better then started again since I've been off work and I notice it takes alot of energy mentally for me to do everyday things.

I feel so far away, and even if I'm in a group I can just zone out easily in the backround into my own thoughts and can't even "come back" without forcing myself. Also when I'm around people I've known for years it feels like they are strangers to me and I don't really have any feeling for them. Since it started I found myself being able to approach people more easily but then when more than one person tries to talk to me I feel like looking away from them and not giving eye contact. Overall I feel quiet slow and stupid and I don't feel sharp like I used to be. Derealization?