Currently I have Airtel but I don't use STB these days. Only put cables in for BGT to watch in 4K after 1st Test. I haven't checked live match of this tour yet, only saw PL which was coming with excellent PQ.
Before starting of BGT I wasted 499 for 3 months premium subscription of Hotstar.
I thought PQ will be good in Hotstar but disappointed . I hope SS4K will have best PQ for BGT.
If it is 4k HDR then picture may look dark bcoz the TV may not be capable of maintaining higher peak brightness for long duration.
Try turning of energy saving mode