Hi Ryan,
This sounds really strange to me. Something must have changed if the images disappeared and the performance is slower.
I can’t log in with the information provided, can you please check that?
Yes, there are options to turn off javascript features you are not using and there is also a conditional CSS loader implemented (experimental yet). You can find both on the Compatibility Options submenu. For more in-depth optimizations I suggest trying the W3TC caching plugin or any other cache solutions out there.