no one has that much mem or GPU mem
Most people don’t have actual workstations. Epic’s engine coding is far from optimal, to say the least, I was surprised to see an 18-fold increase in memory going from 8k to 16k. But I’m not surprised. When I tried doing a 32kx32k World Composition to World Partition conversion, it took 26.5 hours.
I could easily build HLODs in UE 5.1
Not me, not on my 128GB system, 16k landscapes would always error out quite early.
And after seeing that the memory commit is over 730GB it’s no wonder why.
Windows won’t typically allocate more than 4x RAM for Page File maximum, so even with 128GB RAM you normally max out at a 512GB Page File. And 128GB + 512GB isn’t enough for 16k.
Video memory is even worse. Most GPU functions that Epic does will only run in Dedicated video memory. And Shared is only 50% of installed RAM. So a computer with 32GB of RAM and a 16GB GPU only has 32GB of Shared GPU memory. On my workstation I can get 256GB + 24GB total, which is required for some UE features to complete without error.
Can you run any size test with Virtual Textures turned on?
I can try that in the next while, I have a bunch of other work to complete first, and these tests take literally hours. 