Lisinopril and upto

im Male 40yrs old, been on Lisinopril for over 2 yrs. Started out with 10mg, now upto 20 mg. I've noticed a consistent feeling of dizzy or unsteadiness. I've also noticed my sight is strange, not able to completely focus at times and dizzy if I spin around too quickly and floaters in view. Also if sitting or driving for long periods of time, I get a head rush or pressure at the base of my neck/skull if I stand up quickly. It lasts a min or two. I feel strange slight pressure in back of my head, that won't go away. I'm about ready to change medications.
The one good thing that I've noticed is that i used to get anxiety, but have not had any at all since on the medications. It seems to have a calming effect somehow. Maybe its normalizing my pressure, im not sure. My 2 cents.