Game Crashes While Mapping

I'm farming juiced rogue exiles. Everything was fine till about 2 days ago, the game just crashes every time some monster drops a lot of loot. And it's fine if I'm doing a white map with no scarabs. I also help a friend through the whole campaign, ran a few 13 breaches maps for leveling, no crash during any of those.

At first I thought there's something wrong with my PC. But last night, I asked a friend to do a rogue exile map with me, and when the map boss dies, both of our games crashed.

What could be the cause of this, and how can I fix it? I already tried clear the game cache and reinstall the game.

Found the problem. It was because of a MTX, ring of the demon slayer. I removed it today, and it didn't crash since then. Unable to play the game for almost a week because of a stupid MTX is bugged. Please fix this.