Hi xiaofan,
Thank you for your reply.
Yes I do not use Singtel TV box.
I am thinking if the S$39.90 per month with free Wifi 5 router/AP is sufficient as I need good and stable connection for zoom, or if I need to get the S$42.90 per month with free Wifi 6 router/AP.
I'd also recommend Netgear or Asus products for good and stable connections. Somemore, with multiple household members all using devices concurrently, internet traffic gets patchy as u've mentioned. The bottomline is that U're not getting the optimal wifi experience with telco bundled routers/mesh systems. Don't feel bad, I was in the same situation as you for a looong time until I chanced upon this subforum 2 years ago.
U mentioned 'ONT', is it the 'ALU' (Alcatel-Lucent) brand?
Maybe also ask your friends/closer colleagues (the more tech savvy ones) if they have an old <Wifi 5 Asus router> that's lying around unused (and working) after they'd upgraded to wifi 6. Borrow the router over a month to test it out. Asus routers have setup wizards that contain Singtel internet configurations that you can choose from a drop down list, so that eases the anxiety of users not so proficient in networking stuff.
And also, do consider other telcos since u're not using Singtel TV or on Singtel Circles. Just use the rates xiaofan quoted as bargaining chip with them. If my mum isn't so dependant on the Singtel TV channels (she's got channel numbers hardwired to her brain and I don't want to rock the boat), I'd have switched ISPs long ago.