Yeah, portraits, ammo and weapon icons don't play well with higher size images. I took the textures starting with portrait_ and ws_ from the original packs and put them back into ai upscale packs using VPVIEW32 and VPPBUILDER32. I couldn't find ammo file names.
Here are the files I found. There are is one file which ends with _portrait. There may be more, didn't have time to search. You can place them in corresponding vpp files in VPPBUILDER32 to have normal portraits (the complete archive is too big, sorry).
ausmods
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