Resdent evil 1 works good on 2019, just like in gungamemod.
But maybe need reupload gamemaps version, because me and other player may connect, but 3th player not (mismatch version massage). Reason: 2 of us got gamemaps map from 10/2016, and i see some changes/updates in gamemap developer link yesterday, so, 2 of us and server got old version, and new players may download a new update version. (i guess you copy /paste VPK file from gungame ? )