Composition resolution has to be same as physical outputs

[Foresight]

So, Thought for a while that my alienware had an unworkaroundable bug with Resoulme 6.XXX

The problem I was having was/is if my composition resolution is 1920x1080 I can only output to one screen. resolume picks up the other outputs, lets me select them in advanced out but only outputs black..

Until...

I set my composition resolution to say 5760 x 1080 and bam, now I can output to 3 screen no worries. However this introduces huge performance issues for this particular laptop which is:

Alienware 13 R3
GTX 1060 6gb
8gb Ram
512gb m.2 SSD

Hopefully this will help some others / also would love for this to be looked at! I go from 60fps down to 16fps(even on black) if my comp res has to be the size out all my outputs combined.

[Zoltán]

Does this also happen with a new Advanced output preset?