Mod requests (orders).

Hello everyone!
I have two questions for the Heroes experts. I decided to play through the Orc campaign and noticed some things that I would like to fix:
1) Are there Orc models with better detail? It seems to me that the Orcs look the most "plastic," especially levels 1-3.
2) I noticed this before, but it's especially noticeable in this campaign: the heroes seem to "twitch" (double) when moving on the global map. I noticed this with the hero Kujin in the "One Khan, One Clan" campaign. One could talk about the limitations of the engine, etc., but when playing as Toulun in the same campaign, this doesn't happen; he moves smoothly.
I have removed all hero replacer mods.
I wanted to ask if anyone knows where the hero movement is encoded in the files, so I could at least compare the code for these two heroes and find the differences. There is a chance that this can be fixed.