Hey and Eric,
This issue unfortunately appears to still be present in 4.7.6. I just created a brand new empty project w/ no assets and the CPU is still consuming over 8ms on it’s own.
I remember very clearly back in 4.6.1 it was around ~2.3ms. Something still seems to be consuming a lot of time. I don’t want to rule out that it is a driver and not the engine so I’ll have to test this theory out but if you get a chance, load up 4.6.1 and open up an empty project and let me know if you happen to see a discrepancy between that and 4.7.6.
Let me know if you want me to check anything for you.
Thanks again!