Because TS use more compression Technology for their Transpoder Due to create More space for channels & service this Reason also afftted to picture quality that's The reason you face decrease picture quality sometime
@Pranab bro if you watch limited channels than 50 favorite options are enough. Do arrange Bengali & Telugu HD channels as favorites than access them at one place.
Regarding pq please do adjust pictures setting from TV. When I switched to TS I also felt pq is inferior but after adjusting picture setting from TV everything is fine infact then I felt TS edge over d2h
I too watch HD channels only and I am tired of adding and sorting HD channels in favorites. This is so irritating. Sometimes TataSky changes the channel number and that channel just vanishes from favorites list. Tatasky should really fix this and give an option to list ALL HD channels in the Guide.