It may be the wireless with that distance,
So either get a extender and more cord.

Or I've heard of setting up a PC to act as a pool for your miner's which is then tied to a pool.
Never tried it. But then you are effectively only pushing one signal to the house.

Other option may be a bigger wireless repeater.

But wired is the way to go! Likely to many packets of similar info for it to handle..