We are making additional performance improvements to both the zcashd wallet and full node as part of release 5.2.0.

This release is primarily targeted at improving the validation performance of Sapling and Orchard transactions as well as an incremental improvement to the scan performance of post-NU5 blocks. The release also made improvements to getblocktemplate performance and added Orchard information to getrawtransaction and decoderawtransaction. We will continue to address remaining scan performance issues in subsequent releases.