Which is better Vdsl2 Profile for gaming?

hello,

which is vdsl profile is better 17a or 35b i don't care about speed i only care about is low latency

Doesn't really matter... if you can get an artificially low sync with very high SNR doing so on 35b will give higher resiliency compared to 17a, but typically that is not a choice you can make...
The difference is that 35b uses 35 MHz of bandwidth, while 17a only uses 17 MHz, so 35b has twice as many subcarriers which allows for more concurrent throughput (higher sync) or on equal sync, will have more room to select the best carries with bits and likely with less bits per used carrier.

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