Question about Lossless + QP Value

Hey, I am just wondering if there is any way to get rid of the extra encoding options while choosing Lossless. When I reencode normally with smoothie I am only using the arguments "-c:v hevc_nvenc -preset lossless" instead of voukoder using "gpu=0 multipass=fullres preset=p7 profile=main qp=0 rc=constqp tier=high tune=lossless"

Was just being very picky and wondering if any of the other settings are causing quality loss because I can see a very small amount of pixelating with the voukoder render vs raw clip/smoothie render. Thanks in advance!

Thank you for the response, at first I tried using the same settings as above with QP 51 and my final render was laggy but it turns out it was an issue with MPV and the high bitrate. Appreciate the help!