remove both games and split in one sounds like a good idea.
Unfortunately there is no way to remove auto speed adjusting and there are no indicator, some players may never found that game was slowered during the ran.
The rule is good, but i guess it should stand only for manual speed change and not for auto. Not everyone have powerful enough PC (even top tier will not handle last FA mission on +0 and will fall to -1 eventually)
Point about faf against vanila - there are enough people who run this game in faf already, convince them to start record runs would be way easier then convince to both record runs and play in vanilla instead of faf.
Checked out my replay from faf, and the answer was quite easy. Hard difficulty (more stuff on the map) and faf higher graphic quality consume more resources and few time during the game, game speed was automatically adjusted from +0 to -1 and then reverted back. I can send you replay file (btw it's would be nice to make replay files obligatory to submit run) so you can see it your self. As far as i know, vanilla faf would also do this, but in more rare cases since graphics in vanila usualy lower.
You right, something wrong with game timer, like it's slower then real one.
Anyway, my main point is to remove easy and medium difficulty from categories, as you can see by my runs, there are no objective difference, and quantity difference easy to negate with right tactic
I'am not sure if you tried to do something with this situation, so i decided to beat all you times first (which is not very hard). I'll also download my FAF runs of the same missions in hard category. First run submitted btw
There are no video, but you can download replays and watch via game.
The only difference is interface and you cant change difficulty down from high.
This third party extension is actualy quite popular, if you playing SC and you dont know about FAF - you kind of out of actual SC community, including SC speedrun community.
The game was provided with 3rd party client. https://forums.faforever.com/index.php It also have campaign missions with leaderboards. Only hard are runned (cause there are no difference in objectives, only in amount of enemy units).
Current "records" actually not even in top 10.
Same for Expansion Forged Alliance.