Slower performance on full screen Nvidia Optimus Laptop

[ivanmestre]

Hello, I'm getting slower performance on full screen than on windowed mode. I have a Laptop with an Intel Core i5 6300HQ, 8 GB of RAM and a GTX 960M. The Laptop has Nvidia Optimus switchable graphics technology. The integrated GPU is an Intel HD 530. I'm using a 14 of August development build 0b0c342.

I added CXBX-R exe to the Nvidia Control Panel and selected the High Performance Nvidia GPU for it:

Testing Dead or Alive 2 Ultimate I get a locked 60 FPS gameplay on windowed mode. When on windowed mode the Nvidia GPU stays at around 30% utilization at 135 Mhz, while the Intel GPU stays at around 5% utilization (the first line in the overlay is the Nvidia GPU, the second line is the Intel GPU):

On full screen I get slower performance, around 10% to 20% less performance, dropping to the low 50s and high 40s FPS. When on full screen the Nvidia GPU stays the same at around 30% utilization at 135 Mhz, while the Intel GPU jumps to around 35% utilization:

I also tested Dead or Alive 3 and got similar results. I'm sure that this a very specific Optimus related issue, but I hope the cause can be identified and be fixed.
Thanks in advance.

[Sarkie]

#784

[LukeUsher]

What emulator settings are you using, and what hacks do you have enabled (if any?)

[ivanmestre]

All default settings. The only hack I enabled was "Run Xbox threads on all cores", "Render directly to Host BackBuffer" is also enabled, but I think that one was enabled by default because I didn't enable it.

[ivanmestre]

@Sarkie It is recognizing the Nvidia GPU without issue, and in newer builds I don't have to use d8tod9 anymore.

[gandalfthewhite19890404]

Hack Run Xbox threads on all cores should be turned ofа - it brings instability and hangs.

[ivanmestre]

Ok, didn't know. But without it I can't get anywhere near full speed.

Also, I'm getting the same issue with it off. Around 45 FPS on windowed mode, 35 FPS on full screen.

[LukeUsher]

Closing this as no response for a long time.