Would you say it performs at least as well as 4.6.1 did on same machine?
For reference, these are specs you mentioned in another post:
Mac OS 10.10
MacBook Pro (15 Zoll, Anfang 2011)
12 GB 1333 MHz DDR3
AMD Radeon HD 6750M 1024 MB
It’s an older system so it may struggle on Epic settings. Have you tried lowering engine scalability settings? It may also help if you turn off Realtime in Viewport settings.