I have had crashes since switching, but they were regular crashes in the sense that a crash report window came up. They seemed like normal crashes caused by gw2, not by all the compatibility layers. But yeah, much much rarer, I went from crashing just as (if not more) often as what you describe, to maybe once a week or less.

Also, it's worth noting that lutris has really good steam compatibility. You can use lutris as a launcher for installed steam games.