00:01:55 5451MB | [aov] done preparing 14 AOVs for 12 outputs to 12 drivers (0 deep AOVs)
00:01:55 5521MB | starting 44 bucket workers of size 32x32 ...
00:06:55 25229MB | 0% done - 1 rays/pixel
00:06:55 25275MB | 5% done - 0 rays/pixel
1. I tried rendering many times and got stuck each time at starting 44 bucket workers of size 32x32 without any output images during this time;
2. Sometimes when I finish rendering, there is no image (gray). When I try rendering again, there is an image;