FPS problems.

[TaxableFoot]

All right, first off I apologize if this is the wrong place, because this is semi launcher related. First off, I'm having some FPS problems. On any mod in the technic launcher, I only clock at around 15 FPS. On vanilla Minecraft I clock at average 60 FPS. I have done many things, including disabling my anti-virus, changing my java priorities and devoting more space to it. Even on lowest settings, I only get 28 FPS. And I know that it is not the mods. I converted the entire technic pack over to my vanilla minecraft and it ran flawlessly. I would do that again, but that was a long time ago. And there isn't a thing on the internet on how to do that again. My PC specs are good, hence how my FPS on vanilla Minecraft is. I'm not sure if it helps, but here they are:

Windows 7 Home Premium 64 bit

model: Acer Aspire 7739G

processor: Intel Core i3

581 gigabytes

NVidia Geforce GT 520M

If you've read this far, thank you. I love technic pack and I want to play it with not such a low FPS. I would greatly appreciate some help with solving this.

[Teraku]

How much RAM did you allocate in the modpack options?

[TaxableFoot]

How much RAM did you allocate in the modpack options?

I tried all options, from 16 g to the lowest 500 mb.

[Torezu]

You have a laptop with an NVidia card. Read this, from a completely different place and time.

I've been having this exact set of symptoms (including the magic launcher issue). I just figured out what was causing it, and boy do I feel stupid!

I have a Dell XPS 15z laptop. It has two GPUs: a shitty Intel chipset for low power video applications and a GeForce GT 525M for 3D performance applications. It's supposed to automagically switch between the two depending on the application. Something about the technic and magic launchers breaks this automagic. It looks like Nvidia had to carve out a special exception in the driver for Minecraft, since it runs within a java host machine. I suspect that the core issue is that the Mojang launcher runs minecraft.jar by way of javaw.exe (no console environment), while the technic launcher and magic launcher run it via java.exe.

To get technic/tekkit/yogsbox/magic launcher running on the right GPU, open the Nvidia Control Panel. Go to the "Manage 3D settings" section. Pop over to the "Program Settings" tab. Click the "Add" button. Browse to java.exe. The location will vary depending on your OS and java version. On my 64-bit system with Java 7 it is:

C:Program FilesJavajre7binjava.exe

Where it says, "Select the preferred graphics processor for this program", select "High-performance NVIDIA processor" instead of the default "Use global setting (Auto-select: [...])" option.

Bear in mind, this will cause all java applications that run with java.exe to use the NVIDIA GPU, not just Minecraft. For most people, this probably isn't an issue, but if you run a lot of 2D java apps on such a laptop for whatever reason, this will negatively impact your battery time. I don't know of any way to target Minecraft specifically. It might be possible with a registry hack, but I haven't been able to locate where the driver stores its per-application settings.

I don't know how you'd do this on an ATI/AMD system, but I think it's almost certain that you can.

With vsync off, I'm back to getting 90+ FPS everywhere, as I do in Vanilla minecraft with optifine.

Only you should use the NVIDIA Control Panel instead, under the Manage 3D Settings button and the Program Settings tab.

[TaxableFoot]

You have a laptop with an NVidia card. Read this, from a completely different place and time.

Only you should use the NVIDIA Control Panel instead, under the Manage 3D Settings button and the Program Settings tab.

This seems to have worked, thank you!