[MP4-tech] What is relationship among ME_SearchRange, PSNR and Bitrate?

[Carter]

Could you please help me?
Hi.
What is relationship among ME_SearchRange, PSNR and Bitrate?
If SearchRange is increase from 16x16 to 32x32, What happen to PSNR and Bitrate?
I think that PSNR(32x32 SearchRange) is well over PSNR(16x16 SearchRange) and Bitrate(32x32 SearchRange) decrease than (16x16 SearchRange).
I guess when SearchRange is 32x32, PSNR value is from 20.312 to 24.582 
and Bitrate is from 300Kbps to 150Kbps.
cf, This experiment environment have occur at JM 10.2 decoder.
Is that Right?  
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