RUN rollout.py for visualizing, but the GLFW window seems to freeze

[xspkwy]

My PC environment: ubuntu20.04, RTX3090, nvidia-driver 460.91.03, CUDA11.2

first problem is "ERROR: GLEW initalization error: Missing GL version+"
Referring to openai/mujoco-py#44 (comment)
I added export LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libGLEW.so in the .bashrc and solved it.

But when I run the code
python scripts/rollout.py --load_dir runs/Door-Panda-OSC-POSE-SEED17/Door_Panda_OSC_POSE_SEED17_2020_09_13_00_26_44_0000--s-0/ --horizon 200 --camera frontview
command window hints Creating window glfw and the mujoco_py window starts but always reminds me

and then the window freezes.

After waiting several minutes, then it will rollout the episodes. I checked the time and find that
Loading policy...
loading time: 7m 16s
Policy loaded
So why would it take so long time to load the policy?