Spaceman.Spiff's post in What would i need to upgrade/replace for a higher FPS? was marked as the answer
That's unfortunate. There really isn't anything you can do then other than remove some mods. I would start with those that you just mentioned. Then go through your modlist and ask yourself "do i actually use this?" Also, if there are processor-heavy plugin mods, maybe consider doing something about those.
Since you have a laptop, there is no way to improve it.
Spaceman.Spiff's post in If i had a better PC would KSP be shorter to load? was marked as the answer
Well.... I switched from an HDD to an SSD, and it only made about a minute difference on my 7 minute loading time. I have yrt to update parallax which may have limited my loading speed. (issue now fixed).