I have a really strange issue with TexGen, to be more precise, Texconvx64. For some texture generating is too slow, both in TexGen and DynDOLOD. I'm using alpha 65, but have same issue with 63rd and 58th alpha. Why I think it's an issue? Because it used to take 30-40 minutes at max for TexGen and 25-30 minutes for DynDOLOD, now it's 1,5 hours or worse for TexGen and literally forever for DynDo. My hardware is i7-3770 non K, DDR3 8GB 1600 Mhz CL9, HDD SeaGate Barracuda and RX570. Here is a timings for reference