Interesting discussion [here](https://github.com/envoyproxy/envoy/issues/8448) on compression performance and buffer sizing. Should we make `per_connection_buffer_limit_bytes` configurable as part of this issue? 

I can also think of future use cases that include buffering filters (ext-auth with body, WAF, ext-proc, lua, buffer) that should be part of the Envoy Gateway scope and require buffer size tuning.

Originally posted by @guydc in #2451 (comment)

Currently default to 32Kb
#1306