August 3, 2026
Router drama hits full speed
Show HN: We Fixed UniFi's Slow PPPoE Performance with PPPoE Half-Bridge
UniFi owners are cheering the speed boost — and asking why they needed a workaround at all
TLDR: ArcBox Labs found a workaround that lets slow UniFi routers finally handle very fast internet by offloading the heavy lifting to another device. Commenters were split between impressed applause and brutal side-eye, with many asking why an expensive router needs a backup plan in the first place.
A small networking hack turned into a full-on public therapy session for UniFi users. The post shows how ArcBox Labs squeezed proper speed out of a very fast internet line by making a separate device handle the annoying login chore that was slowing the main router down. In plain English: their expensive UniFi box was acting like a sports car stuck in first gear, and this workaround finally let it breathe.
But the real fireworks were in the reactions. Some readers were impressed that someone finally proved the trick works in the wild, with one commenter saying they’d long suspected this was possible and immediately imagining faster results on OpenWRT, a popular router software. Others were much less charitable. The sharpest hot take? Basically: if you need another box to make your premium router work properly, why are you still using that router? That “just ditch UniFi” energy hovered over the whole thread like a storm cloud.
Then came the classic internet peanut gallery. One commenter grumbled that the method wastes some valid internet addresses. Another delivered the purest nerd-eye-roll of the day: this could’ve been “two paragraphs and a config snippet,” plus the bonus slap that it wasn’t even a real “Show HN.” And tucked between the dunks was a practical flex from a Bell customer who dropped a guide showing how they got full speed another way. So yes, people love the fix — but they’re also loudly asking why a pricey router needed fan fiction to function.
Key Points
- •ArcBox Labs reports that a 5 Gbps PPPoE connection behind a UniFi gateway could not approach rated speed and caused strain on a UDM Pro Max.
- •The article attributes poor PPPoE performance on many UniFi gateways to the lack of PPPoE hardware acceleration and to single-threaded PPPoE processing for a single session.
- •It lists typical PPPoE throughput ranges of 1200–1500 Mbps for UDM Pro/SE, 1400–1800 Mbps for UDM Pro Max, and 1400–2400 Mbps for EFG.
- •The UCG Fiber is presented as an exception because its MediaTek Filogic 880 SoC includes PPPoE hardware acceleration and can exceed 5000 Mbps on PPPoE.
- •The proposed workaround is PPPoE Half-Bridge, where an external device terminates PPPoE and passes the public IPv4 address to the UniFi gateway via DHCP.