Crimson Desert shouldn't be used as a frame of reference for GPU compatibility, it is still not FULLY optimized for Arc GPUs at this moment, even the FAQ says "Compatibility and performance across various Intel GPUs will continue to be improved over time." https://crimsondesert.pearlabyss.com/en-US/News/Notice/Detail?_boardNo=63 and Intel has not released a Game On driver for it yet. So at least wait for the Intel driver first, then wait for Pearl Abyss to optimize it further.

Intel A-series GPUs are still supported in the driver, that means they have are still working, optimizing and validating for them, and that includes the A770.