Not quite sure what you mean, do you have any more clarification or maybe a video?
You can't, sorry, generally it isn't the greatest/most accurate for the majority of games, including non-spyro ones.
I think generally for SD capture people go with gv-usb2 now, but it probably has it's pros and cons compared to other things that i'm not aware of.
If you want you can join the spyro speedrunning discord for an answer from someone who might know more on the subject, https://discord.gg/GDYcVjg
Also from that previous thread with the discord link, it's still the pinned one and is seemingly working, linked it to someone 2 days ago and didn't have any issues, https://discord.gg/GDYcVjg
If it still isn't working i can try message someone in there who can create a new temporary one
Probably going to be hard to mention something that isn't already in a tutorial, might need to be more specific with what's going wrong, also could post a video of your attempt(s)?
Usually if you're popping out when trying to clip it's because you're either not correctly aligned with the wall or you're being too aggressive with the taps into the wall. I'd try to give you a rundown of how I go about doing it but it's 5am and my method is slightly different to most people so i'm not sure explaining it would work out too well.
There's a couple tutorials out there, they're by good runners of the game, but that's my only vouch for their usefulness as I haven't watched them personally -
Heres a link to the spyro speedrunning discord aswell if you want some real-time help from people: https://discord.gg/GDYcVjg
Pretty much what dact said, everything run related on the boards will be removed if cheating is involved.
"I'd also add that the misc. category shouldn't align too closely with any official categories, either- noodles% was rendered obsolete by the Sorceress skip slashing the run down to any% two hubs, go to Fireworks."
I guess it was implied but I edited the post to show that it shouldn't be close to main ones either, although I wouldn't mind having noodles up as an exception personally since it's just a part of history at this point.
Either way it's just for fun so not going to be hard about most things.
Since there's been demand for it, if you're interested in having a misc. category on the boards that isn't already there, feel free to message a mod of that game with the category/rules that associate with it and it'll most likely get added.
Although the point of miscellaneous is to add competition to the more arbitrary/fun aspects of a game, It is advised that a category shouldn't be too similar to other misc. runs/main categories to avoid clutter on the boards.
Also, feel free to submit times to the boards for runs you've done in the past, i'll list categories that have been added since this post.
Spyro 1 -Cheat% -80 Dragons -Vortex%
Spyro 2 -64 Orb
Spyro 3 -149 Egg