Game crashing every 5-10min

Dear all,

the game on the mac version is crashing extremely frequently. Especially after or before loading screens (reward after battles or env loading when taking a portal, …) It really become unplayable. 
What can I do to help?

My system info: 
Model Name: MacBook Pro 
Model Identifier: MacBookPro11,2 
Processor Name: Intel Core i7 
Processor Speed: 2.5 GHz 
Number of Processors: 1 
Total Number of Cores: 4 
L2 Cache (per Core): 256 KB 
L3 Cache: 6 MB 
Memory: 16 GB 
Boot ROM Version: MBP112.0138.B16 
SMC Version (system): 2.18f15

Graphic info:

Chipset Model: Intel Iris Pro 
Type: GPU 
Bus: Built-In 
VRAM (Dynamic, Max): 1536 MB 
Vendor: Intel (0x8086) 
Device ID: 0x0d26 
Revision ID: 0x0008 
Color LCD: 
Display Type: Retina LCD 
Resolution: 2880 x 1800 Retina 
Retina: Yes 
Pixel Depth: 32-Bit Color (ARGB8888) 
Mirror: Off 
Online: Yes 
Built-In: Yes 
Resolution: 1920 x 1200 @ 60 Hz 
Pixel Depth: 32-Bit Color (ARGB8888) 
Display Serial Number: HS5PA00134 
Main Display: Yes 
Mirror: Off 
Online: Yes 
Rotation: Supported

I have attached More logs


[crash_log.txt](< base_url >/applications/core/interface/file/attachment.php?id=10173)