I haven’t been able to find settings that made it playable.. but I’m far from expert level, I’m sure someone will find a solution, I think siege is one of the more involved games to tune for xim. Ftr my issue was at the worst when I ADS, it was jumpier than I’ve seen a game, but I only tried PVE mode and I didn’t turn off in-game aim assist, which is available in PVE...
If you just got it, there’s a bunch of upgrade points in the training scenarios you can knock out with a controller, if no-one posts a solution in the next day or so let me know on here and I’ll post the best config ive managed so far