Hello!
It's unclear why the DAG file was generated a second time
After that, there was a drop in speed.
What timings and frequencies do you use?
Try these:
777000000000000022C39C00AC595A3D90550F12B84C8408004006007E0514206A8900A00200312 0100F292F94273116 // 1167(cclock)/1980-2070(mclock)
or
999000000000000022C39C00AC595A3D90550F123CCF530C004006007E0514206A8900A00200312 0100F292F94273116 // 1167(cclock)/2050-2150(mclock)
or
777000000000000022339D00AC595A3D90550F1230CB440900600600740114206A8900A00200312 0150F292F94273116 // 1167(cclock)/1880-2040(mclock)