use both. Cyberjaya actually far from the main backbones of the internet.

run the DNS benchmark, between cloudfare and google DNS, put the faster one first.
On my router i can have many DNS servers, heres how i decide mine.
First 2 DNS servers are openDNS (i use some settings).
Then the next 4 DNS are both google and cloudfare.
I Use the DNS benchmark to sort which IPs go first between openDNS 2 entries and the next 4 entries.

TM seems to have improved their infra but they still only have 1 PPPOE gateway per large area and that will be the main cause of problems for them. ISPs with multiple PPPOE gateways per area will have less issues because if you have a router like mikrotik you can connect to multiple simultaneously and it will use the faster one automatically, and for normal users, their routers will connect to whichever gateway responds the fastest. Very few ISPs around the world actually implement this and it requires no special config, only for more gateways to be available on the layer 2 network.

put everything in, so when the faster DNS cant resolve, the slower google one does.