Speed & Network

Your speeds match or exceed what a modern home connection should deliver. Nothing to fix right now. Two habits worth building: (1) run this test wired every few months so you notice degradation before it becomes annoying. (2) if you upgrade your ISP plan and the new speed does not show up here, the bottleneck is between the modem and your device -- your router, your Wi-Fi hardware, or an aging Ethernet cable is the likely culprit, not the plan.

Your speed is well below what most modern connections deliver and low enough that 4K streaming, cloud backups, and large video calls will suffer. (1) Plug directly into the router with Ethernet and re-test -- if wired is much faster, Wi-Fi is the bottleneck (bad channel, distance, old hardware). (2) If wired is also slow, reboot the modem and check for firmware updates on the router. (3) If both still show slow, call your ISP with these numbers and ask them to run a line test on your modem -- specifically request the SNR margin and signal-to-noise readings. Those two numbers reveal a bad drop cable outside your house 90 percent of the time.

Your speeds are workable for most activities (streaming HD, video calls, everyday browsing) but well below what a modern connection can deliver. Two easy checks: (1) plug directly into the router with an Ethernet cable and re-test -- if it jumps significantly, your Wi-Fi is the ceiling (upgrade to a Wi-Fi 6/6E router or add a mesh node). (2) check the speed your ISP is actually selling you vs. what you are paying for -- many people are on a lower tier than they think.

Grade A or B means your router is handling bulk traffic without starving your interactive traffic -- exactly what modern routers should do. Nothing to fix. If you ever start seeing choppy video calls or lag spikes during file uploads, come back and re-run this card as your first diagnostic; a router firmware regression or ISP change can quietly reintroduce bufferbloat.

Grade F is severe bufferbloat -- interactive apps (video calls, gaming, remote desktop) will feel broken any time someone in the house streams or uploads. The fix takes an afternoon: (1) log into your router and look for Smart Queue Management (SQM), FQ_CoDel, or Adaptive QoS -- if it is there, enable it and set both download and upload to 90 percent of your ISP speed. (2) If your router does not have SQM, buy any router that runs OpenWrt or the ASUS RT-AX86U (~$100), put it in bridge mode behind your ISP router, and enable SQM there. (3) Do NOT rely on the router's "Gaming Mode" or "Media Priority" -- those are marketing gimmicks and often make bufferbloat worse.

Grade C or D means your router is buffering more than it should but is still mostly usable. Enable Smart Queue Management (SQM) or Adaptive QoS on your router if it supports it -- set your download and upload limits to about 90 percent of what your ISP delivers. If your router does not offer this, you have a few weekends before it becomes a problem; start shopping for a router that runs OpenWrt or has native SQM (Ubiquiti, MikroTik, ASUS Adaptive QoS).

Sub-50ms latency across the board is excellent -- competitive gaming, remote desktop, and voice calls will all feel snappy. Nothing to fix. If you are on fiber and see numbers in the single digits, your ISP has good local peering -- worth noting because that is the single biggest factor in "the internet feels fast."

Latency above 150ms makes every interactive app feel sluggish. Two possibilities: (1) your local connection has an issue -- test wired to rule out Wi-Fi, reboot the modem, and if the problem persists, run "tracert 1.1.1.1" from Command Prompt and screenshot for your ISP. (2) your ISP has a routing/peering problem -- if only ONE of the four test endpoints is slow, that is a peering dispute; ask your ISP to check the route to that specific provider (e.g. "check the route to Google's AS15169"). Gamers: latency matters more than bandwidth. A 100/100 Mbps fiber connection at 5ms will beat 1000/1000 cable at 25ms every single time.

50-150ms is the range where things work but you can feel the delay in typing on remote desktops and in competitive gaming. If gaming or remote-desktop are important to you, worth checking: (1) are you on Wi-Fi when Ethernet would be faster? (2) is your ISP known for good peering in your area, or would a different provider (fiber vs cable) help? If those are fine, this is just physics -- you cannot get closer to servers that are physically far away.

Under 10ms of jitter is excellent -- voice calls and games will feel steady and responsive. Nothing to fix. If jitter starts creeping up in the future, it usually means either Wi-Fi interference (a new neighbor's router on the same channel, or a new microwave/baby monitor) or a slowly failing cable outside your house.

Jitter above 30ms is the #1 cause of "my internet is fast but Zoom sucks." Fix in order: (1) Move closer to your Wi-Fi router, or switch to 5 GHz -- 2.4 GHz Wi-Fi competes with microwaves, baby monitors, and every neighbor's network. (2) If wired, replace the Ethernet cable and try a different port on the router -- a single bad cable or port can produce jitter on that link only. (3) Ask your ISP to check for "line errors" or "CRC errors" on your modem -- those are the smoking gun for a bad drop cable or corroded connection outside your house, and ISPs will only investigate if you ask by name.

10-30ms of jitter is workable for voice calls but you may notice occasional stutters in competitive games. If you want to tighten it up: (1) switch from 2.4 GHz to 5 GHz Wi-Fi if you have not already -- 2.4 GHz is much noisier. (2) if you are on Ethernet, check the cable itself -- a bent RJ-45 connector or a Cat 5 (rather than Cat 5e/6) cable can produce jitter. Not worth calling the ISP unless it gets worse.

Zero packet loss is exactly what you want. Nothing to fix. If loss appears in the future, the two most common causes are (a) a corroded connection or bad drop cable outside your house (cable ISP) or (b) a saturated backhaul (ISP capacity issue). Both are their problem to fix, not yours.

Above 15 percent loss, nothing works reliably -- this is a broken connection, not a slow one. Test wired to confirm, then call the ISP and demand a technician dispatch. Reference this exact packet loss number when you call: it is the fastest way to skip past the "have you tried rebooting?" script. If they refuse a truck roll, ask them to open a "line test with SNR readings" ticket -- that phrase gets you routed to a technician who actually understands the physical plant.

5-15 percent loss will break voice calls and real-time games. Test wired to rule out Wi-Fi, reboot the modem, and if it persists, call the ISP: "I have persistent packet loss on a wired connection. Please dispatch a technician to check my drop cable and modem signal levels." Do NOT accept "it is your equipment" without a line test -- cable ISPs in particular love to blame the customer for what is almost always corrosion at the tap or a bad amplifier on the pole.

1-5 percent loss is the marginal zone -- streaming and web browsing will still work, but voice calls will start dropping words and games will feel choppy. Test wired first to rule out Wi-Fi. If wired shows the same, reboot the modem and re-test after 5 minutes. If it persists after that, it is almost certainly a physical problem between you and the ISP.