My visuals are glitchy every time I export

So I finished an animation and in the test screen it all looks good, frame rate and dimensions match in encoder, my animate is all up to date. But it's still bugging out like crazy. I have audio in it, but the audio exports fine. I've tried removing the audio, but the visual is still glitching. It completely skips frames or stays on one frame for way too long and I've tried to find anything online, but there's nothing. I've been at this for two days now. The first attachment is how it should be (recorded from my phone) and the second one is how it exports. I didn't include the sound since it's copyright and hasn't been affected by the export Any help is appreciated 🙂