[pradeeprama]

Originally Posted by jlpsvk

So... stats write encode (I am not writing here mastering display, options), spline36 downsized from 3840x1600 to 1920x800:
--crf 17 --keyint 240 --min-keyint 24 --profile main10 --level-idc 5.1 --output-depth 10 --ctu 32 --amp --vbv-bufsize 160000 --vbv-maxrate 160000 --me star --max-merge 5 --rc-lookahead 40 --lookahead-slices 4 --gop-lookahead 34 --ref 5 --hdr --hdr-opt --repeat-headers --no-info --no-deblock --no-sao --no-strong-intra-smoothing --high-tier --analysis-save c:\stats.dat --analysis-reuse-level 10 --scale-factor 2 --no-cutree

Stats read encode at full 3840x1600:
--crf 17 --keyint 240 --min-keyint 24 --profile main10 --level-idc 5.1 --output-depth 10 --ctu 32 --amp --vbv-bufsize 160000 --vbv-maxrate 160000 --me star --max-merge 5 --rc-lookahead 40 --lookahead-slices 4 --gop-lookahead 34 --ref 5 --hdr --hdr-opt --repeat-headers --no-info --no-deblock --no-sao --no-strong-intra-smoothing --high-tier --analysis-load c:\stats.dat --analysis-reuse-level 10 --scale-factor 2 --refine-inter 3 --refine-intra 4 --no-cutree

With or withou AVX-512, result is the same.

What CPU are you using?