Generally, oil consumption increases with power demands on an engine so
this is a symptom --- of something.
If it were my car I'd check the PCV valve to ensure the crankcase
venting system is clear and not allowing pressure to force oil past the
valve guide seals. The valve guide seals would be the next suspect.
Suggest you consider a higher SAE weight oil i.e. 20W - 40 or 20W - 50.