Encoding Speed Too Slow

[hxjwb]

Hi author,
I tried encode 1080P YUV, it takes 40ms for a whole white image and close to 100ms for videos with content. So I switched back to 720P, it takes 50ms in average for 720P videos. I've tried the S1, S2 and conventional modes and it remains similar.
May I know is this a typical speed for analyzing and encoding? Or is there anything I can check to make the speed faster for real time encoding? (less than 30ms) Thanks :)

I'm using Intel Xeon Gold 6430 CPU, I think the hardware should not be a bottleneck.