Buffering on wifi (airtel india)

Hello, I am currently on a 100mbps wifi plan. It has been working fine ever since. I iust got a new tab and a smart tv and the videos seem to buffer a lot on these devices, particularly for prime video and twitch (from what have noticed… somehow youtube is completely normal) The wifi seems to work fine on other devices and the tab and tv work perfectlv on alternate wifi. On the tv, the wif sometimes shows up as having a limited connection, even when it is working fine on other devices. I have around 6 devices onlv connected to the wifi at a time. Anvthing I stream seems to buffer for a minute and then it runs smooth, if I reopen the app, it needs to buffer again before it resumes. I have only tried messing around with device dns settings like changing to google and cloudfare dns, but nothing has helped. The issue remains. Any suggestions are welcome. Thank you.