OK, I got the time to watch this today. The stupid was strong with Barry in this one. So strong I think it may be one of the particle accelerator explosion superpowers.
• Desperately need a way get to other universe, don't tell anyone you just found one. Check.
• Open a breach to Zoom without even wearing your new tachyon thing, only get saved because Cisco gets scared right on time. Check.
• Scold Supergirl for not having a plan for a garden variety meta*, then be in such a hurry to make a half-assed plan for stopping your most dangerous foe. Check.
• When you actually get him, abruptly stop hurrying—give him time to escape while you're babbling. Check.
• Consider for real that giving Zoom everything that he wants is actually a good idea. Checkmate.
If I thought getting Snart's help to drive some metahumans across town was a bad idea, I apologise. This one takes the cake. Such recklessness should get his speedster license suspended for a year.
(* Did Barry even have a plan for Blackout? Or for almost anyone for that matter? That Supergirl moment was WTF for me.)
ETA: Barry's journey to Supergirl's Earth could have been dismissed in a few lines without seeming stupid when they're looking for a way to Earth-2.
Barry: “How long was I gone?”
Caitlin: “Gone where?”
Barry: “I travelled to another Earth and I met... an alien.”
Cisco: “Oh, come on Barry, there are no aliens, you're having speed inebriation.”
And then when suggesting Cisco can do it, he starts with “Outside of my ‘speed inebriation’, I think I have an idea...”