I agree with pilsner, 1105s are huge motors lol I have an 1104 build for outdoor use only… and yes, the hover point is when the quad just chills in the air at a set altitude, not rising or falling, just hovering. For example, most of my brushed quadcopters will hover at about 50% throttle. If I then put on a set of more inefficient props on the quad then the motors struggle to grasp air, therefore my throttle % will be higher than 50% to maintain a hover.
It sounds like you may be suffering from a brown out, which is when an electrical component (FC, Rx, ESCs, Etc. ) fail to get enough electrical current due to a battery with too low of a C rating.
When you throttle up for a punch out, it sucks up MAD energy at once. If your battery doesn’t have the C current to provide all that energy at once the voltage sags too low and the FC will reboot midair due to lack of electricity.
I would try to get a battery with the highest C Rating available. 75c is ideal.
Although I am a noobie, and there could be more technical factors causing the quad to reboot midair such as desyncs, etc, but I am unfamiliar with how that all works…
Do you have OSD on your quad? If so watch your voltage as you throttle up. If it drops below 9 on a throttle punch you are more than likely on the verge of having a brown out. A 3s battery is DEAD at 9v. You should be landing at 11.1v.