Hey guys bulding my second quad and its not flying correctly. Im concerned that my problem can be fixed in betaflight. Whenever I take off its not long before it starts to bobble too much and am forced to land. Everything looks like it is put together correctly but I'm not sure how to fix this, please help. Also, it doesn't throttle up correctly, seems to never reach full throttle. 

This is the list of my specs:

Lumenier QAV-RXL 2 - 10" FPV Quadcopter Frame

 
Lumenier lu3 700kv professional motors

2200 mah 35c 11.1V batteries

Lumenier Elite 60A 2-6S BLHeli_32 4-in-1 ESC

Lumenier Lux F7 Ultimate Flight controller (Dual Gyros)

Frsky Taranis Light

X8R reciever

Do you have a DVR or video of your flight to show us what you are referring to? Can you post a dump file and diff all file for us to check?