running time is too long to calculate ld score

i was calculating the ld score with WGS data (by chromosome) with a sample size of ~5000 individuals. I found that the running time is too long (running two days already but still no output). Here is my code: ${GCTA} --bfile ${bfile_path} --ld-score --ld-wind 10000 --ld-rsq-cutoff 0 --ld-score-region 200 --out ${output_file} --thread-num 48 

btw, i found that GCTA only identify and accept the parameter of "ld-wind" and ignore the parameter of "ld-score-region". Is there anything wrong?