Me neither. I play at 1440p/120hz. Both cables can manage that resolution and frame rate.
The only difference I get is when I use DisplayPort and leave my computer alone for 20 mins, the GPU goes to sleep and the monitor won’t display anything although I hear background apps/games running.
Without changing any settings, using a HDMI cable solved that.
HDMI it is.
Not surprised in the slightest.
Everything that isn’t in line with Putin’s point of view is at risk of being classified as terrorist or extremist, as simple as that.