This will pass a substance graph instance to the substance engine to be recomputed but it will stop execution until the substance engine has finished processing the substance before continuing on to any further code execution. Sync rendering is a blocking rendering call. (The higher the number, the more choppy texture updates become because the time in between the updates is longer). Lower numbers will speed up how quickly an async task will complete and be updated where higher numbers will batch renders and process multiple substance at a time. This limits how many async substances can be passed to the substance engine each batch. To change the SGM for a Substance, right-click on the Substance Factory>Asset Actions>Bulk Edit via Property Matrix. Platform Default is Load Async and Cache Substance Factory SGM on Load Async and Cache: Caches an intermediate result of the texture on disk. Substances are generated in the background. SGM on Load Sync and Cache: Caches an intermediate result of the texture on disk. SGM on Load Sync: Blocks the application while the Substances are loading. You loose ability to change parameters at runtime. The SGM can be changed on a per Substance Basis on the Substance Factory. The Substance Generation Mode (SGM) controls how the textures are generated. The GPU engine will allow you to create 4K textures. The substances are then processed through the substance engine and updated at run time with the high resolution LODs. The lower resolution / smaller LOD's will be loaded and the highest will be defaulted by the UE4.

This setting can greatly improve load times and reduce package size because the larger texture mip levels will no longer need to be loaded.

Mip Level count removed during cooking will alter how textures are created for a package. (If the number assigned is greater than the available cores on a system, this will default to using all available. This includes both physical cores and hyper threads. The CPU Cores is how many cores the Substance engine is allowed to use. (Not always a helpful increase at a project level). Can be increased to improve speed of substance processing but will consume more system resources.

The memory budget is the max amount of memory to use for the substance engine.

To access the settings, go to Edit>Project Settings and scroll down to the Plugins category and click on Substance.

Ue4 add plugin to project