I'm attempting to make video streaming with latency as low as possible at 50ms or lower if possible, assuming that it's streaming over LAN.

The latency is like 200-400ms with the config. I'm not sure what's the problem is.

ffmpeg -init_hw_device d3d11va \
-filter_complex "ddagrab=0:output_fmt=auto:framerate=60" \
-c:v av1_amf -usage ultralowlatency -rc 1 -async_depth 1 -g 60 -fps_mode vfr \
-fflags nobuffer -flags low_delay -strict experimental \
-sdp_file stream.sdp -f rtp rtp://225.0.0.1:55555

stream.sdp

v=0
o=- 0 0 IN IP4 127.0.0.1
s=No Name
c=IN IP4 225.0.0.1
t=0 0
a=tool:libavformat 61.9.107
m=video 55555 RTP/AVP 96
a=rtpmap:96 AV1/90000
a=fmtp:96 profile=0;level-idx=14;tier=0

Decided to keep ffplay simple since I tried many options without any tangible benefit.

Run it on different PC

ffplay -hide_banner -protocol_whitelist "file,udp,rtp" -i stream.sdp