There's loads of help on every mod author's wiki page or on another packs FTB wiki as well as pack specific help at http://www-mesolostinspace.forumotion.com/
Everything good comes with a price. The startup is as fast as it can be without 10,000 hours of modification. Logging into the server lag is from your PC loading up the LUA stuff for OpenConputers.
Any problems CONTACT ME FIRST! Do not bug mod authors with crash reports unless you are told to do so. As a custom mod pack author it is my responsibility to ensure stability between mods. If a mod author contacts me about you bugging him/her endlessly you may receive a temporary ban. Repeat offenders may be perma-banned! This is the only option I have to help keep mod authors work load to the necessities. I have literally spent months tinkering will all sorts of bits in the system and (on my server) have added additional event filters and commands to further assist in inter mod/plugin compatability. Leave the already overworked authors alone and let me do my job. ^_^
Any problems, comments, questions, or other form of communication should go through our forum. http://www-mesolostinspace.forumotion.com/ You can also report bugs on the bug channel on Discord. https://discord.gg/pqn69WW We are most active on Discord.