If there is a solution to this problem (and believe me, it is one), then I'd sure like to know what it is... I have been in this same position, and it was no fun.
Seems to me that the "Do-Nots" often get irritated with the "Doers". I'm not really sure why that is. In my case, I was presented with a mystery, with nearly no clues, and immediately started trying to wring them from the stingy Universe. I tried to get the rest of the party involved, and include them in decisions. I asked a lot of questions, and one of them turned up an answer. So off we went to the home of the man with the same questions.
When we got there, I was moving, and wouldn't have a phone for the next month or so, so I had my character wait outside the city. This prompted a PC (who was being played as an... donkey, so we'll call his PC "JA") to ride after mine, making a mock attack with a sling, yelling "Have you forgotten why we came here?"
I hadn't, my PC (we'll call him E) had found the clue that led us here... Rather than attack, I had Emake an impossible Hide roll, and disappear into a gully, and I sat out the next month of play. One of the other players (who would later become a problem, we'll call him G) started making disparaging remarks about my PC. During that time, the PCs questioned the NPC (B), and started off to find another (M). That's when I (and E, my PC) rejoined them.
The second NPC (M) was a fount of knowledge, so I asked him a lot of questions. Then the disparaging player (G) says we're wasting time doing this, so I/E say(s) "Okay, I'm going to the store". As soon as he thinks I can't hear him, he starts with the back-biting, again. Now he (G) says E is running off when the rest aren't ready to leave! (Make up your mind, willya?)
So now everyone else is staying to talk to the NPC, I go off to search the town, talk to a third NPC and gain some more information (which never got shared with the group), meet up with another PC (A) rejoining the group, go to meet a fourth NPC (W, who I offend and get no information from), and meet up with the group finally coming from the second NPC's (M's) going to see the fourth (W), so I pass, and go to a fifth place. When we're ready to leave, along comes the rest of the party. We wait, they mostly ignore us.
Later, we go to yet another place, and they go back to where they left the... donkey PC (JA) who attacked mine. He has been carted off to jail (my PC saw it). When they return, E/I tell them about it, but he can't be gotten out, for a while...
Anyway, we all get together for that night, and the GM has an NPC who accompanies the party (D) wake mine (E) for a big meeting. During this, the disparaging PC (G) uses every opportunity to cause trouble for mine. I stand up for him, but let it go. At the end of the meeting, my PC says something like "You spellcasters might want to get together and coordinate spells for the morning... but then again, teamwork isn't the rule here, is it?"
And the fight was on!

One of the other PCs (Dog) invites my character to leave. Another one (H) says "That's a good idea; here's my list of spells and why I'm taking them". Another one (T) threatens to memorize Magic Missiles
just for me! The GM quickly moves us a day or two along, to get past the fight, and we arrive at our objective. My PC (who has been staying silent since the fight)
suggests that we might want to go ask some locals about the spooky ruins, before we head in... The group actually takes the suggestion, we do, then go explore.
We get there, and have a fight. As soon as the fight is over and my PC says something, my friend in the party (A) says "You may have a sharp tongue, my friend, but also a sharp eye and sharp mind!" Which sets off the disparaging character (G), again. Which causes the one new PC in the party (P) to also jump in on my character, making E the party's verbal "Whipping Boy"...
Now at this point, I wondered to myself, "Now WHY am I getting ready to go down into a dungeon, and risk life and limb with these people?" I think about that... I think about "When did this game stop being fun?" I realize that it never was, but that I was just doing my best to make it fun...
So I say "Here, (D, the NPC who was fireballed and lost all her stuff), I don't seem to be able to do much with these. See if you can do better." I hand her my party magic items, say "I'm going to go check on the horses" (prompting some more disparaging remarks), and quit the game.
The funniest part is, the PCs finish this first part of their seven-part quest, get no treasure, head back to town, and then go "It's been so long, I forgot... Where do we head next?" (No one but "the pesky Elf" took notes, apparently).
By the time the first fight was over, 2 PCs had dropped (including T, the one who was going to Magic Missile me, who was replaced by another player who admitted that he really wasn't a Mage, but a spy). After I dropped, the party recovered one more piece before nearly all the players had dropped. The campaign ground to a halt, and died.
Doers... Your PCs can't live with'em, and your Campaign can't live without'em.