>>46807471Select the mesh you want to edit, enter edit mode, then select all vertices you want to merge
Click on Vertex > Merge Vertices > By Distance
and enter the lowest amount you can
(Sometimes unrelated vertices are too close and you have to do it in multiple batches, but this doesn't happen very often)
>>46807279For me it was Cycles
It got me at first but I eventually backed out of it because these models (and my PC lol) are simply not made for raytracing as dena's attempts have shown
