Rsync is slow when copy files to external TB4 NVME SSD

I was testing file copy from my Mac SDD to external NVME SSD (APFS filesystem (TB4 OWC 1M Enclosure) and noticed that rsync (3.3.0 installed using brew) is much slower than cp or pv. (980MB/s vs 2.84GiB/s) Is there any way to speedup rsync? or I should use other methods for fast file transfers. time rsync -P Desktop/a.mkv /Volumes/Untitled/a.mkv 11,804,013,879 100% 980.25MB/s 0:00:11 (xfr#1, to-chk=0/1) 2.99s user 10.21s system 114% cpu 11.537 total time pv Desktop/a.mkv > /Volumes/Untitled/a.mkv 11.0GiB 0:00:03 [2.84GiB/s] 0.07s user 2.44s system 64% cpu 3.887 total