Ive got a zgemma h2h with virmin, 200 mb internet. Virmin engineer fitted a new cable line with technetix non powered splitter. fitted zgemma h2h and all channels glitching really bad, went through the whole process of purchasing top spec cables of various length with compression fitted ends with no joy so purchased a technetix hdu 200, removed splitter set up hdu as shown by many members on here but still experiencing slight glitching, changed leads over etc etc so the cable quality isn't the problem bought 5m, 1m etc and still the same. Can anyone shed any light on this please, annoying isn't the word. Please be gentle i'm no techie ;-) Cheers.