Which connectivity is best. Display port 1.4a to DP 1.2 or HDMI 2.0b to HDMI 2.0?

My GPU is MSI GTX 1660 Ti ventus xs oc which has Display port 1.4a and HDMI 2.0b. My monitor is Gigabyte G24F-2 (1080p 165Hz-180HzOC) which has Display port 1.2 and HDMI 2.0. Now I'm using HDMI cable to connect, which uses HDMI 2.0 port at both ends. I'm thinking about changing it to Display Port 1.4 cable, but it's gonna use 1.4 DP port at GPU end and DP port 1.2 at monitor end. Because monitor end is DP 1.2, Upgrading to Display port will be any good for gaming(fps games)?? If yes what will be the benefit?? Or should I keep using HDMI 2.0?? Please excuse my english, Any help would be much appreciated.