Aye, I've had the same experience, albeit running Wild Blue on builds of 1.4.5 and 1.4.3. I am now trying it in a GPP pack. Waiting on the initial load and thought I'd check the thread for potential new info. I'd mostly given up until now, opting to spend the past several hours learning MKV. It's a brilliant mod from what I've seen, but I like the concept of "Geo Camping" and moving from site to site a bit better than building perpetual permanent colonies and adding on to them to get them self sufficient. That sounds a lot more RAM intensive.
I'm now at the title screen and my RAM is at 91%. Cutting down the graphics got me to 87%... Gonna check the Buckboards real quick before finishing the post.
Drumroll..
BUCKBOARDS RECONFIGURABLE! WOOT! I'll be sure to post my GameData folder when I exit as I'm posting this from my phone. I'm excited to get into this mod!
EDIT: https://imgur.com/a/DFRXZrD
I quickly realized KAS and KIS were missing from this pack since I just threw Pathfinder in, so I've put them in along with a few synergistic mods like Universal Storage. FWIW the only thing in the USI folder is the WarpDrive. Reloading the instance now. I have a feeling this may be the point where this all starts making sense...
EDIT 2: The pack still works! To the above I added KIS, KAS, Universal Storage, Connected Living Space, Filter Extensions and Janitors Closet. So just do what I did I guess. Running KSP on 1.4.3 with Making History installed.