Which cable r u using bro, how many years old cable?
For me in tataplay cable getting 12 to 18 % signal strength, after changed to airtel cable getting 24 to 32% percentage,BTW it's mdu dish, outter cable is finolex or local brand, after connected multi port splitter, just used 2 meter cable only but signal improved
I think it's cable/dish alignment issue only
Use RG6 Connector in both stb & dish
If possible post connector, splitter & cable images,