I found it! It was my USB3.0 Hub, which was causing the issue. I did power cycle the power on the HUB and now it sleeps well... for those intereste...

If you did not delete the 5.7.3 app, yes you could. Just run it and install the driver. I really doubt it will make a difference. Some process is w...

If you did not delete the 5.7.3 app, yes you could. Just run it and install the driver. I really doubt it will make a difference. Some process is w...

There were no significant changes in 5.7.5 that would affect this. Perhaps the indexing spotlight engine is doing this, let your machine stay awake...