Best settings for gemma-4 on a 3090?

3090 (24G) + 32G DDR4

Currently running

--mmproj mmproj-BF16.gguf --chat-template-kwargs '{"enable_thinking":true}' \ --flash-attn on \ --cache-type-k q4_0 \ --cache-type-v q4_0 \ -np 1 \ -c 160000 \ --jinja

at 26B-A4B-it-UD-Q5_K_XL and generally quite happy with it but it does oom die occasionally (usually when I do something quite convoluted figuring out a workflow, etc.)

I get around 90-95 tok/s. What can I improve on? I'm completely OK with trading speed for performance (by like half, so lets say 40 tok/s would be OK)

Thanks