streaming is horrible

It is unbelievable how sorry the xFinity streaming app is compared to Max  NetFlix and Disney+.  The performance is just as horrible after upgrading to 1G. Performance observed on 2 televisions each on the network individually and simultaneously with no other devices.  The modem within 3 feet of the televisions.  How does xFinity not take ownership and offer refunds for not providing streaming service as advertisd?