[Myrsloik]

Actually this is a bit of a problem in practice. In vs2015 and probably all somewhat modern versions it's only fast for small allocations. Like up to 1080p frames. Once you start allocating a whole 4k frame of space it simply calls virtualalloc. That's quite slow. Even stupid buffer reuse behind a global mutex easily beats that.

Not going to comment on any specific ideas but some kind of buffer reuse can (unfortunately) still help. Or just shove in tcmalloc if you don't use vs2015 and it'll basically do it for you.