How much memory should Omen take up? It starts out small (3mb or so) for me, then balloons to 20+ and sometimes alot more. When it gets high, it bogs down my system. This happens even when soloing with a pet.
Omen takes well under 1mb for me, but I run disembedded so each of the libraries get blamed for their own usage. What's likely is that one of the embedded libraries is doing something at the behest of another mod, and the usage is ballooning up. If you turn off Omen, that memory usage will just shift to another mod somewhere.