Is this cutter brand new or new to you? I have a Graphtec FC7000 and a Graphtec FC8000, both 30" I have no problem cutting very detailed designs. That is my business niche'. My designs are a lot more detailed than that. You are not showing what your problem is. You are not showing what the design looks like after cutting. We can tell a lot from looking at cut vinyl. Too many people use wrong instructions when setting up blade depth. People think you use a credit card or post it notes to set blade depth and that is just wrong and too much blade exposed out of the blade holder. (Even after cutting for years). You have no idea how many people will say The blade depth is correct," I used a credit card to set it" And that is about 10 times too much blade exposed out of the blade holder. "Or it is cutting the vinyl with barely a mark on the wax paper backing." (That does not explain how far the blade is exposed out of the blade holder). Make sure that you have not broken your blade tip off. Very easy to do, if too much blade is exposed out of the blade holder.. You should be doing TEST cuts from the Machine TEST feature before doing any design cutting, That is how you set up your cutter. The blade depth must be correct first, or all of your other settings will be off also. Show your TEST cuts. (The Square and triangle) TEST cuts must be correct first. Without showing what is being cut, we have no idea what you are talking about. Also, make sure you have the flange correctly holding down the lip of the blade holder. We have seen that also, Also make sure the cap is tight on the blade holder. A lot of us cutters use a 60 degree blade for cutting everything. Setting blade depth is all about, using the least amount of blade exposed out of the blade holder. The correct combo is less blade, more force.
This works correctly for any vinyl cutter. To start with, you should set your blade depth correctly, by taking the blade holder out of the machine, and firmly cut across a piece of scrap vinyl, you will be cutting. You should only be cutting the vinyl and barely a mark on wax paper backing, Adjust blade to get there, Then put the blade holder back in machine, and use the force of the machine to get there, same results, only cutting the vinyl and barely a mark in wax paper backing. You should barely see and feel the blade tip out of the blade holder. Regular sign vinyl is only 2-3 mil thick. You only cut with the very tip of the blade. When you think the blade is so far in the blade holder, that you think it would not even cut, that is probably correct.
No mention which cutting software you are using, That cutter came with Graphtec Pro Studio which is rebranded Flexi Sign Pro. (for windows) The best that you can get.
You stated this cutter is new.. So, why haven't you contacted Graphtec tech support? They are your tech support. The cutter would be under warranty, if it was new.