It is nice to have simulated confirmation of the M4 Max 128gb limitations on Gemma4 31B vs Gemma4 26B A4B at Q4:

Time to first token (TTFT) on 5,687 tokens, like pasting a short code block into the prompt, takes 36 seconds vs 4.7 seconds. It also breaks down the seconds for each step like KV and prefilling.

Gemma4 31B TTFT on the M5 Max 128gb with same setup is showing as 19 seconds.