Slowdown during modeling and abnormal use ram 3dconnexion. 5.2 WIP (5C185w)

I kept checking strange behavior of Rhino in the last 2 weeks. At one point, after many hours of operation, Rhino slows the execution of commands and in the pan object, the SpaceMouse Pro (3DxVirtualNumpad) occupies up to 1 GB of RAM and at that point, during the pan, objects move with an effect similar to that of the trackpad in Safari pages (drag even after the command release). At that point I have to reboot and everything is normal. I noticed that this behavior occurs when activity monitoring marks 30 gb of memory used (about 32gb). I have been told that El Capitan always occupies much RAM when running in order to make it more responsive, but I suspect that some resource continues to accumulate to the point of ram swap.
I recently changed the size of all the high-resolution images that I use in Rhino to maximum size 300kb one o’clock in order to verify if the situation was improving. Rhino instead continues to take 10-15 seconds to complete the self rescue.

Generally the problem is while I have 2 or 3 Rhino files open, 1 or 2 with a lot of background images.

El Capitan runs on a Samsung SSD 850 External evo 500 gb with Inateck houses supporting UAS.

Software information

Software versions
Rhinoceros version: 5.2 WIP (5C185w)
IronPython version: 5.1.2015.131
Language: it (MacOS default)
OS X version: Versione 10.11.4 (Build 15E65)


Third party kernel extensions
com.3dconnexion.driver (10.3.1) 351F5729-EB92-3F08-B022-6206FCA697E9

Hardware information

Computer hardware
Hardware model: iMac13,2
Processor: Intel Core i5-3470 CPU @ 3.20GHz
Memory: 32 GB
Architecture: Intel 64 bit

Video hardware
Graphics: NVIDIA GeForce GTX 680MX 2048 MB
Memory: 2048 MB
Screen size: 2560 x 1440
Displays: iMac (109dpi 1x)

USB devices
Apple Inc.: FaceTime HD Camera (Built-in)
Apple Inc.: Bluetooth USB Host Controller
Inateck USB to SATA3 Bridge: Inateck Generic USB Device
TOSHIBA: External USB 3.0
3Dconnexion: SpaceMouse Pro
Wacom Co.,Ltd.: CTH-460

Bluetooth devices
Apple: Apple Wireless Keyboard
Apple: Apple Wireless Trackpad

OpenGL information

OpenGL software
OpenGL version: 2.1 NVIDIA- 310.42.25f01
Render version: 2.1
Shading language: 1.20
Maximum texture size: 16384 x 16384
Z-buffer depth: 24 bit
Maximum viewport size: 16384 x 16384

Implementation settings
Use texture compression: Yes

Appearance settings
Antialiasing: 4x
Mip map filtering: Nessuno
Anisotropic filtering: Nessuno