I was thinking, maybe you could fix it with settings in sys.txt?
I already looked around in sys.txt and on the forum but I didn't find the solution yet.

My sys.txt:

[rawdisplay]
screen_xy="auto"
dpi=240

[gps]
accuracy_workaround=0

[folders]
content="/storage/6336-6165/iGO-content"

[map]
map_mode="2D"