i think the issue is with laptops in general because it doesn't seem to be related to resolution as i have just tested it at your resolution and i notice zero issues what are the specs of your laptop?
NVIDIA Geforce 840m
Core i7-4710QH 2.50GHz 4 cores
8 GB RAM
Windows 10
But I remember that I played normally a year ago
i looked into it its a nvidia laptop issue but it can be somewhat remedied by globally disabling fxaa globally in nvidia control panel
the alternative fix is install an older nvidia driver since it seems to be an issue of newer drivers on nvidia laptops
