Running Minecraft at 2048x resolution is extremely demanding and intended for high-end workstations or future-proof gaming PCs. According to the official system requirements , the latest builds of the 2048x pack are some of the most resource-intensive mods available. Hardware Component Minimum for 2048x (Latest Build) Recommended/Notes
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Modern builds can require more than 48GB of VRAM for a full load. Running Minecraft at 2048x resolution is extremely demanding