It’s a really old SMT2 processor with just two physical cores. Even a physical quad-core with SMT2 struggles in 2024, especially if you’re trying to build from source (I use Guix, btw). You need a workstation processor - the U series isn’t going to cut for the task you’re trying to do. Maybe a H, HQ, K or KF-labelled processor? Something like a 6700HQ, 6820HQ, or a Xeon 1505/1535 v5/v6? The P5x series (not the P5xs) is what you need, minus the dGPU. They’re still quite expensive, and at this point, you’re better off getting a A485/T495/T14 Gen 1/2.