Creating a circular pattern around a cylinder/curved surface with a detailed sketch makes the application hang up?

I'm having a bit of a problem.
What I plan to do is create a circular pattern of the snowflakes on the glass, specifically 4 instances. The problem is, my pc can't seem to handle it. SW becomes unresponsive. I tried waiting but it takes too long. I did other models before with more detailed sketches but this one seems to be a problem for my computer. I'm not really sure. If someone could just do the pattern for me and upload it it would be a great relief.