I have been unable to find any new settings relating to vsync or reasons this could be happening. If anybody could point me in the right direction it would be very helpful.
At the start of my script to turn it off. The top line for the target frame rate can probably be left out (just set it to some huge value to test), but running the build causes the vSyncCount to be set to 1 which forces vsync on. I don’t know why since I disabled it in the editor… but I guess the loader at the start overrides everything and we have to manually turn it off.
After doing the above, the problem resolved for me. Using Unity 2018.3 currently but plan on upgrading soon.
I don’t care much about the editor, but in the actual build I want it to be off… or at least toggleable. This solved it for me. I also had to play with the vsync option in the nvidia control panel just to be safe, but the above stuff I wrote was the final step needed for me at this time.