Resolution of the streaming

Hey,

I've been trying out talks and clips streaming lately, but I've run into some problems of the video resolution.

In clips streaming, I'm using a presenter (alyssa-z1fn0H3BfK) with a resolution of 1080x1080px. But when I actually receive the video via webRTC, it's only coming through at 700x700px. Not exactly what I was expecting.
For talks streaming, I uploaded a nice 1024x1024 image to the image endpoint (the one here: https://docs.d-id.com/reference/upload-an-image). But when I use the source URL to create the streaming, the resolution drops to 512x512. However, when I use the same source URL for idle video in the talks endpoint, I get the original 1024x1024 video!

I've already set the stitch parameter to true. Any other magic trick I need to do to get the original(high) resolution video?

Thanks for your help!