Internet Congestion and Bufferbloat makes online gaming hard

Have the xfinity gateway, with Download speed: up to 1000 Mbps, Upload speed: up to 150 Mbps. When I run a bufferbloat test I get a rating between c-f depending on the time. Along with speed tests that aren't good. This happens when other people in the house are using the network (one person streaming, or multiple people using google), but our plan should not cause this many issues. When playing online games the latency often spikes from 20 to 80 to 150 and then back down, sometimes going higher. This is all while ethernet using xfinity pods.

https://www.waveform.com/tools/bufferbloat?test-id=df019445-3a2c-48b0-ae49-ecc2f6370481 

https://www.waveform.com/tools/bufferbloat?test-id=f67ca738-a6dc-477d-9e79-49b282a03cd0 

These are two tests run on two devices connected to ethernet only a few minutes apart. Is there something that can be done to fix this?