Large pages: they are used the same way as day one, and enabled automatically by default, when possible, so when run as admin (at least once) on a Windows 10 and/or pro. otherwise (win 7/8) manual config is needed.

windows may run out of pages after some time, while it's more rare on linux. quick fix: reboot.

webchain, hycon: i answered just above. my top priority remains masari. any test pool somewhere?

let me look at that ryzen for best config. i've a r5 but no r3

Edit: try
--auto -t 2
and
--auto -t 4

one should be the optimal, i bet on 1st one