Minecraft running better on HD Graphics than 940M?

[lalazuli22]

Hi. I recently just bought a new laptop (Asus UX303UB) but I'm having issues with Minecraft. Here are some specs:

Intel i7 6500U @ 2.5GHz
12 GB memory
NVIDIA GeForce 940M 2 GB
3200x1800 native resolution

My initial problem was that Minecraft wasn't running from the dedicated GPU. Once I figured out how to do that and got it running, I realized the frame rate was half of what I was getting when it was running from the processor. I was running Minecraft in 1080p both times because I figured my native resolution would be too much. But no matter what resolution I run it in, it's the same thing: the GPU runs at half the FPS that HD Graphics does. So at 3200x1800, onboard runs at 30 FPS, the GPU runs at 15 FPS. At 1080p, onboard runs at 60 FPS, the GPU runs at 30 FPS. I made sure that vsync was off both in Minecraft and in the NVIDIA control panel. I thought maybe it was the 128x128 texture pack I was using but taking that off made absolutely no difference. Yes, windowed mode runs at a ridiculously high FPS but the problem is it's microscopic on my screen so it has to be full screen. All my drivers are up to date as well, and I just downloaded the newest version of Java.

I don't really know where to go from here. Any ideas? Thank you.

 

[popatim]

Its common for laptops with an additional GPU to run the GPU at half power unless the charger is plugged in. Can you plug in the charger and see if the issue persists please?

 

[lalazuli22]

Yeah I did all of this with the laptop plugged in and made sure everything was in high performance mode. I just tried installing Optifine and it made Minecraft run better on the processor but it made it run even worse on the GPU.

 

[popatim]

I'm at a loss to explain it unless it has something to do with the DDR3 version of the 940M that your laptop has.

 

[lalazuli22]

I'm at a loss to explain it unless it has something to do with the DDR3 version of the 940M that your laptop has.

I'm not sure either. It's only Minecraft that has this problem. I just ran Civ 5 at 3200x1800 60fps and the graphics card did just fine. I'm gonna try uninstalling and reinstalling both Java and Minecraft. I don't know where else to look at this point.

 

[JRHNBR]

Haha I have the same exact issue (same GPU but with an i7 5500u and Intel HD graphics 5500 and 16gb of ram). Minecraft runs between 55-60 fps on the Intel GPU but, on the same exact settings, I get an average of 37 fps on the Nvidia card.

 

[lalazuli22]

Haha I have the same exact issue (same GPU but with an i7 5500u and Intel HD graphics 5500 and 16gb of ram). Minecraft runs between 55-60 fps on the Intel GPU but, on the same exact settings, I get an average of 37 fps on the Nvidia card.

It's seriously the most ridiculous issue haha I've had everyone I know look at it and the best answer I got was that there's probably a memory leak. Are you running Windows 10 too? I'm waiting for an update to see if that fixes it.

 

[JRHNBR]

Haha I have the same exact issue (same GPU but with an i7 5500u and Intel HD graphics 5500 and 16gb of ram). Minecraft runs between 55-60 fps on the Intel GPU but, on the same exact settings, I get an average of 37 fps on the Nvidia card.

It's seriously the most ridiculous issue haha I've had everyone I know look at it and the best answer I got was that there's probably a memory leak. Are you running Windows 10 too? I'm waiting for an update to see if that fixes it.

Yeah I'm on windows 10.

 

[JRHNBR]

Haha I have the same exact issue (same GPU but with an i7 5500u and Intel HD graphics 5500 and 16gb of ram). Minecraft runs between 55-60 fps on the Intel GPU but, on the same exact settings, I get an average of 37 fps on the Nvidia card.

It's seriously the most ridiculous issue haha I've had everyone I know look at it and the best answer I got was that there's probably a memory leak. Are you running Windows 10 too? I'm waiting for an update to see if that fixes it.

OK so I think I found a solution. Turn VBOs on in the settings and run the game at max resolution but windowed. I get at 90-160 fps on maxed settings now when I do that.