I am working with 4k video clips made with a Canon HFG70 camera. The program gives me a "Not Responding" message sometimes when I try to either move a clip to the trimmer or move a clip from the Trimmer to the timeline. My only option is to shut down the program and restart it. This can happen multiple times with various clips. How can I correct this?

My system configuration:
Operating System
  Platform: Windows 10.0 (64-bit)
  Version: 10.00.19045
  Language: English
  System locale: English
  User locale: English

Processor
  Class: Intel(R) Core(TM) i7-7700K CPU @ 4.20GHz
  Identifier: GenuineIntel
  Number of processors: 8
  MMX available: Yes
  SSE available: Yes
  SSE2 available: Yes
  SSE3 available: Yes
  SSSE3 available: Yes
  SSE4.1 available: Yes
  SSE4.2 available: Yes

Display
  Primary: 2560x1440x32

Memory
  Physical memory: 32,707.1 MB
  Paging memory available: 37,571.1 MB

Video Card
  NVIDIA GTX 1080 6GB
  Driver Version: 537.13