Infinite worlds not supported on Windows 10 PC

When creating a world, the Infinite world type is grayed out, and when clicked says that my device isn't supported. My laptop has an AMD Athlon 64 TF-20 processor, and an ATI Radeon HD 3200 Integrated Graphics card. It meets the system requirements of the Java version of Minecraft, so I don't see why infinite worlds don't work.

Thanks,