Performance problems on secondary slots since update

Hi =)
I've upgraded Innerbox and ISBoxer today and ran into a problem right away.
The Secondary Slots ( I play 3 Diablo III Accounts , 1 on the Main Monitor and the other 2 on the secondary Monitor ), are lagging really bad, even when putting all settings to the lowest, which I didnt have to do before.
Well it worked smoothly before, I dont really know what changed.
My guess is the CPU Strategy, since this option didnt exist in the old version I was using before.
Again I didnt have any specific GPU / CPU Strategy Options before, and it worked like charm.
( To Specify: the Secondary Slots lag and stutter, even if I swap the onto the main monitor )
They run at ~8-9 to 20 fps although I configured all windows to run at 60 / 60. And it worked before ....

Info on my System:
Intel I7 4770 ( 4x 3,40GHz ) 2 GB Vram
8 GB Ram
Nvidia Geforce 770 GTX
Internal Intel Graphics for 2nd Monitor

( Apparently its got something to do with the internal graphics card for the 2nd Monitor, but again I wonder, why it doesnt work anymore when it worked before like charm Oo )
How would I ensure that the Games all start on my main Monitor and then be moved like said in the GPU Management Guide on the Wiki ?
This could maybe be the problem, apparently the new ISBoxer / Innerspace version starts them on the 2nd monitor right away, which the internal graphics cant handle.
I dont know why they didnt make this configurable, since old version did not make this decision for you, they just "dumb" started everything on the main GPU , which is exactly what I want, but without having the secondary windwos on my main monitor...

I would be grateful for any help.
I'd hate to have to get a refund because it doesnt work good anymore :/

[MiRai]

The specs of your system make it sound like you've got a desktop computer. If that's the case then Intel's GPU wouldn't even be used unless you've plugged your second monitor into your motherboard. So, plug both of your monitors into the GTX 770 and that will fix things. You can likely go into your UEFI/BIOS to disable the integrated graphics as well, if you're on a desktop.

If you're on a laptop, then you should make sure you're on the most recent set of drivers from http://www.nvidia.com. You can also try setting your computer's Power Plan to High Performance in the Control Panel, and also setting the game's executable (and only the game's executable) to Prefer Maximum Performance in the nVidia Control Panel.

hm guess thats the only way, to plug them both into the gtx770 , I just wondered why it worked before Oo
The Monitors where always plugged in this way and the Version I was using 1.x something worked fine that way , well thanks anyways.
Still interests me out of curiosity though =)