(Is there a way to disable the voice acting when booting up the game?) For anyone that wishes to boot up the game without the voice acting at the beginning every time, remove the mod named "whereareyou" in the mods folder.
(Any there any known bugs or glitches that may affect gameplay?) The game also sometimes forces you out of the world if you craft too fast in your inventory crafting. The Frostmaw boss from Mowzie's Mobs has the potential to tank your FPS. Tridents from FutureMC don't seem to work the way they should when thrown and disappear...though they still work normally with other enchantments like Riptide.