'1.3x' or '1.3 times' are correct terminologies, not sure what you all are doing. '0.3 times faster' would mean it's 70% slower.
Come on, multiplying isn't that hard folks...
No, 1.3x faster than PS5 is 100% + 130%.
1.3x as fast as PS5 is 100% + 30%
Come on, English isn't that hard, folks...
No, the specific inclusion of "times", which is hidden in the X, means that there is multiplication happening. You always multiply with what you have, so 1.3x faster than is 30% faster, because you multiply the value exactly with 1.3.
If you leave out the X it would be that 130% increase, but nobody talks that way because in colloquial speech you do not refer to percentage values without using the percentage suffix.
If you say "as fast as" that means you suddenly have an equation with 2 sides on your hand. Y = 1.3X. So you get the same result.
To get a 130% increase you will have to either say "130% faster" or "1.3 faster" because in that case both values represent percentages. 1.3X on the other hand is not a percentage and rather a multiplication factor.