- Edited
Iamthemulti now you have piqued my curiosity, what other settings does SLR encode with? 2-pass or 3-pass? veryslow or placebo? etc.
For h265 files: x265, single pass CRF 15, slow preset. Don't be fooled by the CRF 15 though because actual quality is significantly lower than that value suggests due to SLR's use of VBV.
Iamthemulti Quality impact for enabling fast-decode/low-latency (it's the same option that goes by different names) is minimal, and greatly improves playback compatibility.
Fast decode and low latency options are not the same thing. In x265 the low latency option reduces quality a lot because it disables B frames.
Iamthemulti When an encoder setting decreases quality by a couple percent you can usually get those couple percent back by just bumping up the bitrates.
You can bump the bitrates to compensate for the quality loss but it doesn't change the fact that the coding efficiency is lower after disabling the settings. Quality at the same bitrate is lower. The only reason to disable such settings is if you specifically want the tradeoff that they offer (e.g. less demands on the decoder at the cost of lower quality or increased bandwidth/file size).