1080p is 2k. From Wikipedia: "2K resolution is a generic term for display devices or content having a horizontal resolution of approximately 2,000 pixels.[1] In the movie projection industry, Digital Cinema Initiatives is the dominant standard for 2K output and defines a 2K format with a resolution of 2048 × 1080.[2][3] For television and consumer media, 1920 × 1080 is the most common 2K resolution, but this is normally referred to as 1080p." (emphasis mine)

I've had pretty much the same experience, but with an RX7900 XTX, which is an even moer expensive card. In the end I even got soft-locked, because I was playing on the highest difficulty, and in some random side misssion I just kept respawning in a spot, where I could not reach any kind of cover before being killed. Of course I tried to lower the difficulty, but that just instantly crashed the game. That was the point where I uninstalled