What's the actual problem you are facing? Are you connect it with LAN cable or Wi-Fi?

LAN cable...
Speedtest are all fine..ping dl and ul...
just that my ps4 games..lag and high ping
my friend are playing the same server and at the same time..din face any ping or lag.

Having the same issue as well currently. No problem with speed but online ps4 game lags every 15 seconds for few seconds. So frustrating. Happens to me after I changed the modem to the new small white Huawei model. The previous one (silver model from 2014), had no problem with it at all. Tm technician came the other day and thought problem was solved but nope. No thinking of finding the old model back but no idea where

Read my reply above.

Maybe you can try to reconnect to get another IP and test again, for example, I always use speedtest app to test the connection to Singtel server, some IP gave me 10ms+- ping, while other IP gave me 190ms ping.

The reason why I choose Singtel to test is because many server located at SG, from my experience I can tell almost half IP offered by TM are bad and the other half is good, so every time when I restart my router, I will reconnect again and again until I get the good IP.

im using the white modem as well
is it related to the modem or the router? From another thread it mention that the router provided sux-tplink ac1200
for the modem not sure if is there any new firmware for that?
how do you logged the issue and ask them to come? You just tell them the gaming ping is sux?

you mean restart the modem to get a new IP?
i tried that but not helping at all

1ms ping to router confirm can.even <1ms.

Have you tried a VPN connection that might help, or can you swap another router to test?

things I will try...
1. try to update the firmware.
2. change another router Dlink 850L
3. vpn perhaps?

will post my result of it