These token numbers look off for a 5090. For comparison, an rtx 5000 Blackwell SFF with just 470gb/s bandwidth gets me 30 tok/s on gemma4-31B-QAT. Almost 60 tok/s with MTP enabled. A 5090 should get you much more than that!
EDIT: Updating llama.ccp gets me 58 tok/s on Gemma 31b
EDIT: I get 259 tok/s with the Q4_K_M quant
https://dl.jszym.com/share/boards/pictures/Screenshot_202607...