Pic in pic and split screen cause unusable latency and stuttering

Greetings all,

I am hoping some wise soul can help me out.

I am having a persistent and new issue when editing using picture in picture or split screen (2 or more videos in frame). I used to be able to use this feature without any issues, as of a few days ago and for reasons I cannot determine, adding more than one video in the frame cause a massive amount of latency and stuttering of both video and audio tracks. I thought doubling the memory would certainly help, but it had zero effect. As of now it is totally unusable. Specs of the laptop are below. I am HOPING its some setting I unknowingly changed? That doesnt seem likely, as I removed and reinstalled shotcut hoping that would help. It didnt.

Any help would be greatly appreciated.

specs

I see this kind of behavior on Windows when my virus scanner is running because it slows down my hard drive.

Have you tried rebooting?

Are there any other applications running that could be taking resources?

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