Frame glitch? Possible time remap glitch?

Hi! This is my first ever post in the community. So I've been getting this glitch on my preview and I don't know if its a timemap glitch or not. I tried looking high and low on Youtube and on Google, but I couldn't find anything about it. Like it has something to with the reappearance of the last frame of one of my pre composed clips. At the beginning of the next clip I know it's supposed to show the first frame of it, but it shows the last frame of the previous one. The frame also shows at a random spot in the next clip. I also don't know if it could be something wrong with my time remap with the clip that has the glitchy last frame, even though I made sure it ended where I wanted to. Sorry if this isn't making any sense but heres some screenshots showing what I mean (and yes i am editing last of part 2 gameplay so please dont mind the comp names haha): 

I forgot to mention I also have twitch on the first clip, but even then I did remove it to see what would happen and it still glitched out. Hope someone can help! 

Thanks for listening to my ted talk 🙂

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