Impact of struct size on cycle count

This is mainly for C++ or other low-level languages, I'm unsure how effectively this translates elsewhere. I was using UE5 at the time of the tests. When your CPU needs a value to perform an operation on, it grabs data from memory in 64 byte chunks. It does this whether your data is 1 byte or if it's 8, 32, etc. This also means that if you fetch two values that are part of a struct, and next to each other, the CPU only uses a total of 1 read line operation. This means that the overhead incurred simply by the size of the struct or data you are operating increases linearly as a function of how many read lines are required to use the data. Some specific numbers: For a struct size of 8 bytes, this will incur 1/4 the overhead