The issue has a take tank model, I have created and it's using about 51 UDIM(s) set, I have successfully textured it inside of Painter. I have exported the maps as well all, at 4K texture maps. I have an issue right now where I try importing one texture map and it crashes UE4.26. Also, virtual streaming is turned on. If anyone ran to into the same issue before, and have a solution. Unless the solution is to use mult-material with the udims.