You can keep your eye on streamlink-latest.exe ( nightly ) here:
https://streamlink.github.io/install...ndows-binaries
https://streamlink-builds.s3.amazona...ink-latest.exe
I don't see any difference for now.
High stream actually works with what you already have, you just have to wait for breaks to end between chunks.
I am better off watching low with resized ffplay so breaks come less often,
my graphic card is Matrox C680 and monitor Eizo FlexScan S1923, so resized low looks like high.