@HauntedOwlbear @psychicparrot42 all the graphic memory used in our engine is "bound" i.e. doesn't exceed the once allocated space and let's say I have my own "mem manager" that grabs/uses/re-uses mem blocks for the GPU stuff it uses very minimal driver/os calls for that MAYBE there's that too ?? I never really spent much time profiling/checking "to the bits" because "it works fine as it is so it's good" 😅 The "test" is "does it run well on X" ? "Yes ? DON'T touch it" 😅 i.e. do I know why ? NO!