Job posted, any other ideas appreciated on slow feeling admin area

I just posted a gig here:

I've installed the Memory Viewer plugin, I'm just not 100% sure of what to make of it. Memory Viewer seems to load multiple times on most admin pages, so I'm not sure if I should be looking at one of them or another or adding them all together.

I'm running 26 network-wide plugins, all of them WPMU DEV except for:
* Proper Network Activation
* White Label Branding for WordPress Multisite
* WP-DBManager
* WP

I've attached a screenshot of a new site, domain isn't mapped, no other plugins are active. Is that slow? It feels slow.

Maybe I'm just being impatient.

According to Memory Viewer, on admin pages on sites with other plugins active, most pages are clocking in around 16s with 99%+ being PHP load time.