Syncvar hooks allocate ~100kb per frame

[JesusLuvsYooh]

Quoting from James:

happens for any syncvar with a hook
will allocate new action every time you set the field
so if you set it to same value every frame (because that is ok with normal fields) it will allocate a lot
so anyone using syncvar with hook should be manually checking value is change
most probably dont know about it, because its a regression lol.
it was caused by some weaver code getting "simplified" and moved to c# instead.
so really that change can be reverted and it'll be fine lol, but I think it was a while ago