I'm a long time user, and I've seen the exact thing before with larger releases.... which only makes this all the more frustrating.
They symptoms are as follows:
You start lightroom and are happily cruising through you edits. On my PC it takes just over 1 second to switch to the next photo and have the sliders become available..... but over time it takes longer and longer. Pretty soon I'm averaging 6-7 seconds from the time I hit the next arrow and the sliders become available.
The system info paste is just after a restart, but I've seen LR using upwards of 8GB of ram. That's totally fine on my system, but there is something fishy about LR opening at 4GB of ram, and then slowly building until it's using 8GB while running slower and slower.
In my mind I thought the days of adobe rushing half baked software out the door were in the past once we switched to CC. I hate to even ask... but anyone found a magic trick this time around?
Lightroom version: CC 2015.6 [ 1078672 ]
License: Creative Cloud
Operating system: Windows 10
Application architecture: x64
System architecture: x64
Logical processor count: 8
Processor speed: 3.5 GHz
Built-in memory: 32650.7 MB
Real memory available to Lightroom: 32650.7 MB
Real memory used by Lightroom: 4289.6 MB (13.1%)
Virtual memory used by Lightroom: 4681.1 MB
Memory cache size: 4634.7 MB
Maximum thread count used by Camera Raw: 8
Camera Raw SIMD optimization: SSE2,AVX
System DPI setting: 96 DPI
Desktop composition enabled: Yes
Displays: 1) 1920x1080, 2) 1920x1080
Input types: Multitouch: No, Integrated touch: No, Integrated pen: No, External touch: No, External pen: No, Keyboard: No
Graphics Processor Info:
GeForce GTX 550 Ti/PCIe/SSE2
Check OpenGL support: Passed
Vendor: NVIDIA Corporation
Version: 3.3.0 NVIDIA 358.91
Renderer: GeForce GTX 550 Ti/PCIe/SSE2
LanguageVersion: 3.30 NVIDIA via Cg compiler