The redstone update speed is slightly slower than 1.4 version which was half repeater tick speed and from 1.5~Latest version, Now same as 1 repeater tick to update the torch.
Note: Affect version is not 1.8.8, it's 1.5.
MC-91711
Redstone torch update speed changes from verson 1.5~Latest version
Resolved
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0
The report you have submitted is working as intended, mechanics of the game may change between updates. Things such as graphics, sounds, world creation, biomes, redstone, villagers, and animals may not work the same in current versions.
For more information see: Full Version History or Snapshot Version History.