Maxis Fibre Fast but WiFi Slow? Here's How to Fix It (2026)
Quick Answer
If your Maxis Fibre speed test via LAN cable is fast but WiFi feels slow, your fibre line is fine.
The problem is almost always inside your home: router placement, WiFi band, device age, or wall interference.
You do NOT need to upgrade your fibre plan.
This guide walks you through a step-by-step diagnostic to find exactly where the slowdown happens, then gives you practical fixes — from free changes you can do in 5 minutes to hardware upgrades that solve the problem permanently.
*This guide applies to all Maxis Fibre plans (100Mbps, 300Mbps, 500Mbps, 1Gbps) and most home WiFi setups in Malaysia.
1
First: Confirm Your Fibre Line Is Actually Fine
Before changing anything, you need to know if the problem is your fibre connection or your WiFi setup. Here's how to test:
✅ LAN Cable Test (the real test)
Connect your laptop directly to the Maxis router using a LAN cable.
Run a speed test at speedtest.net.
If the result matches your plan speed (e.g., 280-300 Mbps on a 300 Mbps plan), your fibre is fine. The problem is WiFi.
❌ If LAN speed is also slow
Then the problem IS your fibre connection — not WiFi. Contact Maxis support or check if there's an outage in your area. The fixes below won't help if the actual fibre line has an issue.
Most common result: LAN speed is fine (matching your plan), but WiFi speed is 30–50% of what you're paying for.
If this is you, keep reading — the fixes below will solve it.
2
Check Your Router — This Is the #1 Cause
Your router is the bottleneck in 70%+ of "fibre fast, WiFi slow" cases. Here's what to check:
Is it WiFi 6 or older?
WiFi 5 (802.11ac) routers max out around 300-400 Mbps in real conditions. If you're on a 500 Mbps or 1 Gbps plan with an old router, you'll never see full speed over WiFi.
Maxis provides a WiFi 6 router on current plans — if yours is older, ask about a swap.
How many devices are connected?
Count everything: phones, laptops, smart TVs, CCTV cameras, smart speakers, tablets. A typical Malaysian home has 10–20 connected devices. Even WiFi 6 routers slow down when handling too many simultaneous connections.
When did you last restart it?
Routers accumulate memory leaks over time. A simple restart (unplug for 30 seconds, plug back in) can restore speed. Do this at least once a week if you notice slowdowns.
3
Switch to 5GHz Band (Free, Instant Fix)
Most routers broadcast two WiFi networks: 2.4GHz and 5GHz. Many phones and laptops auto-connect to 2.4GHz — which is much slower.
2.4GHz (slow but far)
Max real speed: ~50–80 Mbps. Better range through walls but much slower. Crowded with interference from neighbours' routers, microwaves, and Bluetooth devices.
5GHz (fast but shorter range)
Max real speed: ~400–600 Mbps. Much faster but signal drops faster through walls. Best when you're in the same room or one room away from the router.
How to switch: Go to your phone's WiFi settings. Look for your network name with "_5G" or "_5GHz" suffix. Connect to that one instead. If your router combines both bands under one name, log into the router admin page and separate them.
4
Move Your Router to the Right Spot
In many Malaysian homes, the router is tucked behind the TV cabinet or next to the Astro decoder near the front door — the worst possible spots. WiFi signal degrades with every wall it passes through.
✅ Best placement
Centre of the house, elevated (on a shelf or table, not on the floor), in an open area away from metal objects, aquariums, and thick concrete walls. The fibre point is usually near the front door — use a longer LAN cable to move the router to the centre.
❌ Worst placement
Behind the TV, inside a cabinet, on the floor, next to a microwave, in the corner of the house, or behind thick concrete walls. Every barrier cuts your signal by 30–50%.
Malaysian house tip: Double-storey terrace houses are the biggest WiFi challenge. Router on the ground floor often can't reach upstairs bedrooms. If you can't move the router upstairs, a mesh system (Step 5) is the real solution.
5
Add Mesh WiFi (The Permanent Fix for Large Homes)
If your house is double-storey, has thick walls, or is longer than 15 metres, a single router will never cover the whole home properly. Mesh WiFi places multiple access points around your house so the signal is strong everywhere.
When you NEED mesh
Double-storey terrace or semi-D, large apartment (1,500+ sqft), rooms more than 2 walls away from router, or any home where the far bedroom/kitchen has weak signal.
When you DON'T need mesh
Small apartment or single-storey home where the router is centrally placed and covers all rooms. Moving your router (Step 4) and switching to 5GHz (Step 3) might be enough.
Maxis 5G Plus Home WiFi 159 (launched March 2026) includes a 5G Router + Mesh combo out of the box — this is Maxis's built-in solution for homes that need wider coverage without buying separate mesh hardware.
When Should You Actually Upgrade Your Fibre Plan?
Most people who experience slow WiFi do not need a faster fibre plan. They need a better WiFi setup. But there are cases where upgrading makes sense:
✅ Upgrade IF:
Your LAN cable speed test is also slow (matching your plan but you need more),
you have 10+ heavy users on simultaneously (gaming + 4K streaming + WFH on multiple devices),
or you're on 100 Mbps and your household genuinely needs more bandwidth.
❌ DON'T upgrade IF:
Your LAN speed is fine but WiFi is slow — that's a router/placement problem.
Going from 300 Mbps to 500 Mbps won't help if the bottleneck is your WiFi setup.
Fix your WiFi first.
If you DO want to check plan upgrade options, see our full Maxis Fibre price guide — 300 Mbps is available from RM99/mth after promo.
FAQ — Maxis Fibre Fast but WiFi Slow
Why is my Maxis Fibre speed fast on LAN but slow on WiFi?
Because WiFi speed depends on your router quality, the WiFi band you're connected to (2.4GHz vs 5GHz), distance from the router, wall interference, and how many devices are connected. Your fibre line speed and WiFi speed are two separate things.
Should I upgrade my Maxis Fibre plan to fix slow WiFi?
No, unless your LAN cable speed test is also slow. If LAN is fast but WiFi is slow, upgrading your plan won't help. Fix your WiFi setup first — switch to 5GHz, move your router, or add mesh WiFi.
Does WiFi 6 make a big difference?
Yes, especially in homes with many devices. WiFi 6 handles more simultaneous connections better and offers faster speeds than WiFi 5. Maxis provides WiFi 6 routers on current fibre plans — if yours is older, ask about a router swap.
Is mesh WiFi worth buying for my Malaysian house?
If you live in a double-storey terrace, semi-D, or any home larger than 1,000 sqft with thick walls, mesh WiFi is the most effective upgrade you can make. It costs RM200–500 for a decent system and solves the coverage problem permanently.
What's the difference between fibre speed and WiFi speed?
Fibre speed is the bandwidth delivered to your home through the cable. WiFi speed is what your device actually receives over wireless. WiFi will always be somewhat slower than fibre due to signal loss, interference, and router limitations.
Can Maxis Home WiFi fix my slow WiFi problem?
Maxis 5G Home WiFi is a wireless broadband using 4G/5G signal — it's a separate product, not a WiFi extender. It can supplement your fibre in rooms with weak signal, but the better solution is usually improving your existing WiFi setup with proper placement or mesh.
If you've tried everything above and still experience slow WiFi, it may be worth checking if a different plan or setup is better for your address.
Send your full address and we'll recommend the best option.