I was able to solve many problems and performance related to AMD iGPU in Sea of Thives with a guide I made months ago.
But I've never been able to remove "STORM CRASH" in any way, even on amd GPUs, there are people who have been complaining about this a lot for YEARS, NOBODY solves these specific problems, game developers don't seem to be interested in fixing it and I don't know If anyone reports this problem to the AMD company.