bolloxursole: The reason Ruvika asked whether I had the "Upscale Method" option under the game's display tab was supposedly to identify if I have the latest version of the game. I replied I only have "Render Scale" meaning I do not have the latest update, and that's what I'm trying to get. Because I used the offline installers, the game will not auto-update.
Crimson_T: This is what the game's display options (HZD 1 &2.jpg) look like with the latest patch and an Nvidia card. I used the offline installers to update with no issue. In my case I needed the three "Patch (6278995 to 7400739)" files and the singular "Patch (7400739 to 7458568)" to update to the latest version.
GOG galaxy had also offered to update the game though (Update button is right beside play), so you should be able to use either. If you don't have HZD available in Galaxy you can add it manually through the settings option in the upper left corner of the galaxy interface.
Thank you for your reply Crimson_T. I keep saying I do not use Galaxy therefore it is impossible for me to update the game through that.
I have attached a screenshot of what my game's display settings look like. They clearly are the previous version.
I have all 6 of those patches already downloaded. The most recent (740039 to 7458568) gives an error message "This patch is not compatible with your game" if I try to install it by itself. I'm convinced that as the game files and that patch all now have the ID 7458568, the only way to update the game is to download all the game files and reinstall and that's why I asked if doing so would make me lose all my previous game saves? I backed them up anyway so maybe I could add them back manually?