Hi,
You are asking for expertise that is not normally available on a free chat forum. Your hardware description details look more than fine for Adagio on 2016Std.

Check your speed logging directly on onto the server and run Adagio on the server to isolate and eliminate the network element.

Try running on the server with UNC path mappings instead of logical drive mappings. We have seen situations that cause laggard speed issues where Adagio spends time trying to resolve pathing issues on logical drives.

If you want us to really take a look at this, $250 per hour with a minimum charge of $350. Our team can solve this issue or no charge.

Best,
Brian