crash when pressing "lock resolution"

[Jorgensen]

i have two gtx 780 ti cards in my computer.

when open an empty scene and open the octanerender viewport and select "lock resolution", 3ds max crashes.

if i deselect the card where my display is attached in devices > gpu config, i can then use "lock resolution" on / off with no problem, and afterward i activate the card again, and "lock resolution" still works, even if i load a new scene.

3ds max design 2015
octane 2.23.2 - 2.6
octane 2.23.2
windows 7

the same thing happens at my homecomputer, only difference is that i have
gtx 750 ti
gtx 980 ti