game unplayable for anyone else after maintenance?

The game is lagging so much it's unplayable and it just closed completely, for the first time ever, in the middle of a fight. One other alliance member had a crash also.
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Can't tell you how much I've fought for this problem! How I got "jailed"... but yeah
https://forums.playcontestofchampions.com/en/discussion/17259/characters-just-standing-not-responding-under-investigation/p1
I just lost an arena fight with my 5* spiderman because he would sometimes stand there even though I'm tapping on the right side of the screen, and would not dash back at certain times. I mean, that's 18000 points lost, it sucks.
Thankfully it doesn't happen in the more serious fights (for me), but it's still pretty annoying, and I can imagine the annoyance being amplified by 10 if I died in AQ or AW, where it will really cost me potions and units.