What do you mean by native resolution and 16:10?
About lost performance-maybe you have too much space taken up or don't have enough RAM or don't have all the system requirements
Well, by 16:10, i mean resolutions like 1680 x 1050 or 1600 x 1024 whereas my screens all are at 1920 x 1080.
About performance and not meeting the system requirements...
Here are my specs :
Motherboard : ASUS Sabertooth x79
CPU : Intel Core i7-3820 @ 3.60GHz
GPU : 2-way SLI Nvidia GTX660Ti
RAM : 16 Go DDR3
OS SSD : 128Go
DATA HDD : 1To @7200rpm
well, I can play pretty much everything maxed out, except if it is windowed (windows seems to have trouble allowing the main window it's needed ressources).
And just for the fact, I usually have at least 3 screens on at all times, that's why I insist on them all having the same resolution :p.
Thanks for your advice anyways ^^