using the mongo-oplog npm, i'm seeing long startup times when creating a tailable cursor on the oplog.

for db.oplog.rs.count() --> 1682274

• takes 10 minutes to start tailing if i use a regexp query on ns
• takes 5 minutes to start tailing if i use no query
• mongo-oplog-cursor is being passed

tailable: true,
timeout: false,
awaitdata: true,
oplogReplay: true,
cursorReplay: true,
numberOfRetries: Number.MAX_VALUE
https://github.com/cayasso/mongo-oplog-cursor/blob/master/index.js#L66

is there anyway to speed this up? server is version 2.4.10