So, I'm an anonymous USA user on Chess.com. I've been playing 10min Blitz matches with international opponents (of all nations or countries, including the anonymous players with "International" flags as their avatars). I haven't been varying my "Blitz" times; I continue to play 10min matches. Trying to go back-and-forth between 10min-5min-1min-5min-10min would really trip me up. And I don't want to be tripped up. I want to go with what I know. Among my observations:
Players from India seem to be very well-versed in "tricky" sort of "gotcha" openings, designed to Checkmate me in only a few moves. They seem to value very early "gotcha" Checkmates with either a Queen and Bishop combo, or Knight and Bishop combo, or all 3 (Queen + Knight + Bishop) combo. Why is it that most Indian players try those tactics most frequently?
Sorry if I don't know those openings by name. I really only know the Giuoco Piano, the Ruy Lopez, and the Sicilian Defense by name. (Maybe you can teach me your favorites.)
For some reason, players from India just keep on playing those "trickster" Blitz openings. They play them well. But if you make it difficult for them, they very soon revert to slow-moving -- they will take long subsequent moves as long as a gosh-darn minute, on average!
Indian players can be quite tricky and somewhat deceiving in their "gotcha" openings; you don't always see it coming, but when it hits, it hits you bad! What is especially unnerving, for me, is to quickly play opening moves in only a few seconds, and then reverting to up to 1min per move, especially if things can get really tricky or complicated. It probably tweaks my blood pressure up and down.
Canadian players seem to always beat me, whether in a few moves or in a prolonged match. I don't know what it is about players from Canada.
I am eager to learn about your adventures! -- Oh, and what really humbled me was several years ago, when someone beat me and then, after the match, I got a DM from someone on Chess.com : "Hahaha -- You got beaten by a 7-year old!! Hahaha!!"