Hello FHDanielNL,
If you believe this is related to this computer’s hardware, could you post your entire DX Diag? The processor isn’t the only component that affects loading speeds when it comes to the editor as it is also affected by your RAM and compiling shaders is affected by your GPU.
Do you only experience these long load times with the maps provided in the Squad SDK? These are likely complex maps and would require long loading times, especially the first time.