Yeah, playing solely support in anything but S+ (and S if you’re lucky) is usually going to end badly, unless you know how to adapt. By "support" I actually mean I am an opportunist, taking few risks (by staying behind, placing Beakons and splatting careless foes) and reaping great rewards (keeping the enemy team locked in place while my own respawns and jumps to my Beakons to pick up the offensive again). As I said, I can pretty reliably get a winning streak getting me from S 70 to S+ using the Krak-On/(Tempered) Dynamo during a good rotation.
Still, I know what you mean. I play almost only solo queue in S/S+ rank lobbies and I still have to deal with teams who just won’t pick up the Rainmaker, even though I’m using a Dynamo… Like, okay, I’ll pick it up, but don’t expect me to get anywhere with that speed nerf. It’s really frustrating when that happens, but I guess players are just dead set on following the role they had in mind starting the match, regardless of rank. However, when I can use my beloved Krak-On strategy on RM/TC, my teammates tend to understand and play along. I don’t think I’ve seen many cases of there being too many support players. Occasionally, I’ll get paired with another one, but it’s never much of an issue. I actually find it pretty amusing when me and that player go to place Beakons at roughly the same spots at the beginning of the game! On top of this, when I see I have the only long-range/short-range weapon on my team or if we’re all roughly the same range, I mentally prepare myself to play more or less aggressively to compensate for the odd matchup. So for instance, if I’m using the Krak-On with a short-ranged team, I’ll be extra careful and play very defensively because I know my teammates are going to get splatted constantly. I can’t begin to count the number of matches where I was the one who stopped most, if not all of the enemy pushes all by myself.
As for my teammates’ locations, I do get paired with seven Japanese players all the time when I play around 6 PM. And since it’s 1 AM where they live, it makes sense that I’d deal with competent teams more often than not. Players with Western names start showing up a little later in the evening. Of course, I can’t tell whether they’re American or European just from name alone, but chances are it’s more of the latter due to timezones. Overall, I rarely have to complain about connection issues, aside from the occasional laggy game or DC. Incompetent teams are the exception rather than the rule, too. I guess I’m pretty lucky in that regard! (And no, I almost never play squads. I feel like the skill level of people there is really weird from the handful of twin squad matches I’ve played. It’s not necessarily worse than in solo queue, but… I dunno, it just feels different.)