Revert "more timing optimizations"
Revert "more timing optimizations"

This reverts commit 03f67b25a63b2fbbbcd0b7a6322e06700172b7a0.

chriz2600/DreamcastHDMI,chriz2600/DreamcastHDMI,chriz2600/DreamcastHDMI,chriz2600/DreamcastHDMI,chriz2600/DreamcastHDMI,chriz2600/DreamcastHDMI,chriz2600/DreamcastHDMI,chriz2600/DreamcastHDMI