Optimal Resolution lower than native

[XxAnimeBoyxX]

So ive decided to hook a tv via hdmi to my computer and im not sure what its native resolution is, but in windows the highest i can make the resolution go is 1920x1080 so im assuming thats its native res. Although when I choose this resolution windows tells me its not the optimal resolution and that 1360x768 is optimal. Also when I choose 1080p it doesnt look as sharp and clear as 1360x768. So what should i choose, and if its 1080p is there a way to make it look better? If it helps i have two monitors plugged in also but they are connected to my gpu (a ati hd 5770), the tv however is connected to my cpu's (i5 4460) integrated graphics (intel hd 4600).

Thanks

 

[turkey3_scratch]

Do 768p. You can sometimes go higher than native, but no reason to do so.

 

[XxAnimeBoyxX]

Do 768p. You can sometimes go higher than native, but no reason to do so.

Alright, Thanks