Overall description: When I am trying to play "Asteroid redirect mission, part 1", game starts to lag after first dialog. Steps to reproduce: 1. Start training, choose "Asteroid redirect mission, part 1", press "Next", than "m", than Next-Next. 2. "Rendezvous -- practice" dialog opened, "Next" is active. Test changing view and editing maneuvers -- everything runs smooth and perfect. 3. Press "Next", test editing maneuvers and changing view -- very laggy, almost unplayable. "Next" button would be inactive in normal conditions. What I do to test it: 1. Choose minimal setting via game menu. 2. Temporary moved all mods out from GameData dir. 3. Set up debug log in settings.cfg to True 4. Cleaned Player.log and make standalone test. I added line numbers to identify some interesting moments. I pressed "final" "Next" after line no 6875, it started to lag, I ended scenario and closed the game. 5. View pidstat for KSP -- it eats user time, something slightly more than 1 processor. Memory usage, sys calls -- ok. Here is Player.log: https://drive.google.com/file/d/0B9ROfAnslOdGTVlMbkRpNFdfMEk/view?usp=sharing My CPU is AMD FX-6100 Six-Core Processor 3300MHz