Does Storj Support intel instruction set for AES256 bit encryption?

There is introdused AES-IN Encryption Instruction set in Intel CPU. It is super fast and has hardware aceleration.

Good question.
Looks like Srorj does not use hardware acceleration for encryption judging by high CPU load and limited upload speed on fast internet connection (due to en encryption delays before actual upload).

And such HW acceleration is available on both Intel and AMD CPUs for all CPU models produces last ~10 years (from very fist generation of Intel iCore and from AMD FX aka Bulldozer) so it is available on almost all systems now.