Do I have a defective board?

Hi all,
Bought the Atomic Pi board as on a paper it looked extremely promising... Actually, wanted to buy few of them, but decided to try it first. Well, a lot of pain. The preloaded image would not boot at all (it would start, but stuck on a blinking cursor) Tried different ubuntu/lubuntu distributions. Managed to boot Lubuntu 18.10 from USB, but it is useless - if I try to update the packages it crashes during the process. Sometimes it just crashes without any visible reason - the screen goes pink, yellow, etc. It is not a power problem - I'm using 10A power supply, put 4 wires on GND and VCC, added some capacitors to filter out any bad things. I also tried to re-flash the image they have on a website with dd command - it results in immediate crash (white scree). Seems like a huge waste of time. What can I do with this board? Am I the only one that desperate?
Alex

I used all the power & gnd connections and haven't had an issue. There is probably a good reason why there are so many connections for power.....I know how many the User guide says you can get away with.
If the psu you are using is a switchmode supply I'd remove the extra caps, it maybe an idea to monitor the voltage and/or current whilst in use, it might have regulation problems.
From memory the psu I'm using is a 4amp switchmode with a unloaded voltage of 5.2 ish volts.
Lubuntu 18.04 (Bionic) works, even with a realtime kernel.

Thanks Robert,
Yep, the power is super important for this baby...
I built the connector (https://1drv.ms/u/s!AgXQnBFeIFXXwjQ1OFa8aCsVPOg0) from 2.54 Male pin headers (4+4 wires) and added 1000mF and 100pF capacitors that can only help.
Still waiting for the 5V psu to arrive. In a meantime, I'm using a 10A lab power supply, setting it at 5.2V to compensate for the voltage drop. From my observations it never consumes more than 1.6A. I'm at 4.85 - 4.9V on the connector at max load, but afraid to set more than 5.2V - as at lower load it can go higher (on the board) and I don't want to fry it (need shorter cables)... At the beginning I used 2 pairs of dupont cables and it was not good enough. Anyhow, the situation is more stable now. I don't want to try apt-get upgrade anymore, it failed 2 or 3 times corrupting the things, but I was able to update using Lubuntu GUI tool. So, it seems to work now (sometimes the screen blinks, but that is less important to me, I need it headless), and when it works it does everything I need even better than expected. So, lets wait for the PSU to make a final verdict :-)
...Still, I cannot explain why it didn't boot from the preloaded image - I was able to boot from USB, and with an external flash it draws more power, so the voltage was even lower...

First boot took forever on mine but it eventually posted. I'm only using a 3a supply the originally ran a Vizio costar. I flashed lubantu 19.04 to both my api which makes audio work properly from the get go. I did however use a 26pin header and breadboard barrel jack soldered to a pcb as a diy small adapter board.