There definitely wasn't anyone named cinderdog that wanted me to highlight my meme run and post it here, nope.
The DS line of consoles actually runs this game faster than the 3ds/2ds line, oddly enough. It's also much cheaper to get a DS capture card than it is to get one for 3ds/2ds, if you're considering getting one. OBS is a great program for recording / streaming basically anything. It should be able to pick up any capture cards and windows on your PC.
If you're willing to branch out on consoles a bit more, the Wii U VC version is the fastest-running version, and you just need a cheap AV capture card to record off of that. If you have no cap cards and don't wanna spend any money, then emulator runs are also fine, just note that runs on emu are hidden by default on our leaderboards.
There isn't really a good guide for TIme/Darkness at the moment. I can give you the general strats for the No-Wondermail run here, though. It's pretty much just, "play the game normally, but faster." Note that only Darkness has Violent Seeds, and only TIme has Spurn Orbs, Foe-Hold Orbs, and Petrify Orbs.
Get Meowth as your starter (Sassy Male from the quiz or Relaxed Female), take Cyndaquil as your partner. Don't sell the Iron before Mt. Bristle, and make Cynda use Smokescreen against Drowzee. For missions days, you need to complete 3 on the first, two on the second, and one on the rest. After Groudon, you don't need to complete any missions on mission days, just Escape Orb out of Beach Cave or something.
Before the expedition to Fogbound Lake, link Scratch+Bite on Meowth, and link Ember+Tackle on Cyndaquil. Also link Leer+Smokescreen on Cynda, as a separate double-move (important for Groudon).
Don't use Fury Swipes; it misses a lot. When Meowth learns Screech, teach it over Growl. He should end up with Scratch, Bite, Fake Out, and Screech. When Cynda learns Lava Plume, teach it over Leer. He should end up with Ember, Tackle, Smokescreen, LavaPlume.
After the Waterfall Cave revisit WAY later in the game, link Screech+Scratch+Bite, and link all four of Cynda's moves. together if possible (if he hasn't gotton Lava Plume yet, then just link Ember+Tackle+Smokescreen).
Make Cyndaquil use Lava Plume during the Dusknoir fight, and feed him a Violent Seed if you're playing Darkness.
Throw a Stun Seed at Dialga a.s.a.p. in that fight, so you can close in. If you're playing Darkness and have VIolent Seeds, eat those while he's stunned.
If you have any more questions, you can find the PMD Speedrun discord here to chat with us: https://discord.gg/010CVBJffLgZjVlBr (Hopefully that link works)