Ground slam activation angle needs to be lower.

[Lancars]

I noticed when i was trying to have fun and do a headshot challenge with my melee weapon i either swing to high or i ground slam since the ground slam activation on button tap seems to be nearly horizontal. Between 205° and 335°.

The angle for ground slam activation should be lowered to between 230° and 310°

This would allow for that jump slashing DE had intended without suddenly flying across the room away from your targets, Especially when you slightly full off a small ledge you're not diving into the out of bounds area.

[Madetingi]

I don't know if it helps you but you can try pressing the button that moves your Warframe backwards, in PC it would be the "S" while in air, you could hit aiming Straight Down and don't slam attack

It's like a mechanic, press the "S" key while in air to avoid the slam attacks and it won't fall down

Hope i could help you bro :3