Let me help.

Connection: check it and hard wire it. Helps but not 100%. System, this is my first mmo so at the start my system could not handle this game. System upgraded.

Working on 3 or 4 star items. It is expensive. If you don't have a plan to make the gil back and profit, you are wasting your time and gil. Sure you can craft for yourself at far less than MB but is it worth it? The 4 star is heavily time gated and/or very expensive. If you are a crafter you will make the gil back and be able to take the few mil gil hit how ever it comes. Lag, dc, power goes out in storm. Sucks but it happens.

If you are crafting something that takes time, hq or not, you should not be in DF and that includes dps unless you are ready to take the hit when you withdraw from queue. It is the craft or the queue not both.

Finally in crafting, no risk no reward. No reward, no reason to do it. Work with the risk involved.