Same feeling/sensi across resolutions

[Stain]

Hi everyone !

I wanted to ask something. I usually play on 900p (1600*900) the reason why is the habit.

I was playing Team Fortress 2 at 1600*900p. I was playing with 400 dpi and 2.1 sensitivity (49cm/360). Lately I switched to 900 dpi and 0.94 sensitivity that is the same sensi but with different settings.

The feeling between those 2 settings is pretty interesting, I feel like the 900dpi is faster and more reactive than 400dpi even if the sensi is converted to be the same amount of cm/360. 

I want to play at 1080p but will putting a higher res may cause some lag input ? And will upgrading to 1080p feel different than 900p in terms of dpi and sensi ? 

[DPI Wizard]

Resolution will have no impact on sensitivity as long as the aspect ratio is the same.

Do you have raw input on?