render and thread[Solved]

Hello,

I was using panda task to manage my rendering (all object .render() ), but the task was runnning only 0.3/0.4 seconds. I don’t know why, or how to fix it.

I decide to try to thread this part, and it was running all 0.0001 sec, and it was blinking (I can understand why), so I decide to render all 0.1 sec. but it is not good again.

Is it a bad thing to thread rendering? How can I improve it?