The one you linked I posted a while ago but there was no advanteges with it so I just stick with the few flags that i felt had the difference.
–no-check-certificate, retries, timeouts did nothing, bwlimit 0 is already default, dir-cache up to you default is 5 minutes ( so if you want possible rclone uploads to show sooner then you can have it at 1 min wont be any change ), checkers 32, i saw no speed up compared to 16 ( and during that time i was testing with 15+ concurrent streams )
The max readaheaed is more then likley 128M max so regardless what we set max would be used - maybe we could recompile fuse to allow for more.