Hi Jan,
i'm a little bit surprised ,that it works with a GTX 970 4GB (3840x2160 + 1600*1200)
do you have HD Mesh Scenery v3 and a weather addon installed?
Are the 4GB not always on limit?
i have a Asus ROG Strix GeForce GTX1070-O8G Gaming with a
DELL u3011 30" 2560*1600
LG L22WTP 22" 1680*1050
also as a "Windowed simulator" and my second monitor is set to "unused"
average FPS between 20-35
HD Mesh Scenery v3 and xEnviro installed
most of the time are 6 from 8GB Graphicram used
would you say there is a chance that i can run 4KMonitor together with my LG L22WTP 22"