New monitor question -> Possible to run Sacred 2 at 1920 x 1080 ?

[Heinrich1337 4]

Use to play all the time at 1920x1080 and I got a new monitor recently which is a big increase...3840x1600 38" 144hz to say the least and I was wondering if there is any possible way I can run Sacred 2 at this resolution because my short testing on it has shown that the game renders everything perfectly fine however it is unplayable due to an insane amount of lag (I am running an i7 8700k, 2080ti and 48GB ram as well) However the lag will stop if I lower down to 2560x1600 and have black bars on the sides.

Is this possible or is 2560x1600 the games limitation? worst case scenario I deal with the bars or switch the game to one of my other 2 monitors which are 1080p