You can repack pak with no compression at all and check if it will make any difference. Would be nice to check if nonUFS game would improve performance at all, but I guess this is too much to ask for (nonUFS is not even an option for devs because many licenses for UE4 plugins blocks using them outside of PAK assets)hellblade doesn't load files the same way GTA does. GTA is constantly streaming files (meaning constantly decompressing on the fly) while you drive which in the past caused most of the stuttering for these specific games and was fixed by decompressing them.