How to watch the 4K stream for CT?

I have a 1080p tv, for the first match I could watch it in 4K (mentioned as Asli 4K), it was really clear, from the second match onwards it started to play in 1080p only (which looks awful due to the low bitrate)...I know that the only reason the 4K stream looked good was due to the high bitrate, any thing that I can do to get the 4K stream?
Using JIO STB