If it is clogging with wet snow/slush, I don't think any lube will prevent that.

I have read that single stage blowers move slush better, but I have never owned one. Best way to move wet snow/slush is with a plow blade.

I noticed the impeller is spinning kind of slow. The auger is spinning like a bat out of hell though.

What might slow the impeller. Maybe the the fittings for the impeller need to be greased?

The two are connected by a gearbox and shaft, so they both turn at their intended speed, unless maybe, the set screw that holds the impeller to the shaft is loose.

The single stage machines do indeed move slush better.

well figured out what the problem was,the belt was loose so I moved the bolt that connects the pulley closer in so there is more tension, works great now.