Massive freezing with Cryptomator 1.3.2 on macOS 10.13.4

I did not find something similar in this forum: as soon as I have some files copy action on a mounted Cryptomator drive (located on iCloud), my mac encounters repeated freezing for several seconds (sometimes even the mouse becomes unresponsive). Working is impossible. The freezes are not limited to the Finder but also to the whole system (all running applications become unresponsive). As far as the activity monitor is correct (I don’t know if it shows the actual cpu load correctly during such freezes), Cryptomator is consuming just 10-20% of my system’s cpu. I cannot understand why my system freezes that often and how I could fix this problem. How can I provide details helping to find an answer?

+1 I have started to notice this issue as well. Running Cryptomator 1.3.2 on MacOS 10.13.6