Strange render issue regarding windows in-game

So, I've been lurking here for a long, long time (started playing in 2013 I think it was). Anyhoo, recently I've gotten really annoyed at a graphics issue.. The pop-in when it comes to window blocks. Seems to only affect them, and I highly doubt it's my pc (GTX1080, 16GB RAM, i5 overclocked to 4,5). Anyone else encountered something like this? Google has not been helpful :(

http://steamcommunity.com/sharedfiles/filedetails/?id=956505498 http://steamcommunity.com/sharedfiles/filedetails/?id=956505405 http://steamcommunity.com/sharedfiles/filedetails/?id=956505262 http://steamcommunity.com/sharedfiles/filedetails/?id=956505189

As you can see, it's all the same ship (an atmospheric luxury cruiser I'm building) and as soon as I zoom out the windows just disappear. Normally I wouldn't be too bothered, except it's noticeable when inside the bloody ship. Not fun.

Happy building, engineers, I hope someone has a solution =)

//JJ