100% New and Built my own drone..Now Issues

[genchoppa]

So here is the List

Flyfish Volador 3.5 Frame

Tmotor p1604 Motors

speedybee f405 mini stack

jhemcu expresslrs antenna

walksnail avatar nano v3 (not being used yet don't have goggles yet)

Controller radiomaster pocket

followed a video on youtube from hoarder sam sub250 build

Also a video from chris rosser about using the expresslrs preset in beta flight

that's all i've done as far as programming

all looks good in betaflight as far as i know controller moves in software looks good

now when i power the drone up it will arm. and move according to my controller inputs

but after a few seconds maybe a minute it bugs out and full throttles and my inputs wont respond only disarm

so if i bring the throttle to 0 its still going full throttle and i have to disarm to stop it

and when i re arm its normal again for a few then crazy train.

any help would be appreciated and again i dived in head first figuring it out as i go along. I learn better that way.

I have rc cars and trucks and things an it almost feels like its losing signal. RC cars use to do this so that's what i'm thinking

But i'm just doing testing in the house no more than 5-10 feet from the drone so i'm totally confused.