I have a gtx 1660super, with a dp 1.2 connected to my main monitor the: https://www.amazon.com/Samsung-27-Inch-Curved-Monitor-LC27RG50FQNXZA/dp/B07TGMC29J I can get the 240hz option when I create a custom resolution on the Nvidia control panel, but I can't tell the difference, anyone that was near me told me it looked the same, and I also did a couple of side by side tests with another monitor. On games, websites, whatever, my settings say that I am running 240hz, but it's not really 240. If anyone knows how to help pls reply. Also, when I check me native resolution, it says that I can only go up to 120hz.