The reliability is definitely a bigger question, jitter a bit more questionable, but as far as latency goes 5G fixed wireless can be just fine. YMMV, but on a lot of spots around my town it's pretty comparable latency/jitter-wise as my home fiber connection to similar hosts. And connecting home is often <5ms throughout the city.

I was considering my cell phone and hotspot experiences (not 5G fixed wireless.) I suppose that has some amount of prioritization happening in order to provide a "stable" experience. My experiences with LTE/5G/5GUW have varied wildly based on location and time.

Fixed wireless sometimes operates on dedicated channels and priorities.

My experiences on portable devices have also seen some mixture of performance, but I'm also on a super cheap MVNO plan. Friends on more premium plans often get far more consistent experiences.