Yes, the game is playable offline once the required updates are downloaded.
Prior to the 1.0.1 update, players encountered several issues. The most glaring problem was texture "pop-in." Because the game streams textures from the storage medium, the initial version struggled to load high-resolution assets fast enough as Spyro sprinted through levels. This resulted in a blurry landscape that would suddenly snap into focus seconds later. Furthermore, some users reported audio crackling during cutscenes and occasional frame rate dips in dense areas like the Treetops level or the demanding Spyro: Year of the Dragon worlds. Spyro Reignited Trilogy -NSP XCI Update 1.0.1-