Ingus in my party seems to have been inflicted with slow (he has three little grey triangles pointing downwards next to his icon in the menu, and he's scoring fewer hits per turn than he used to - only 1 or 2 per attack vs 4-5 before the grey triangles appeared, his job has been warrior consistently through the game). It shows no sign of going away by itself and I can't find any items or spells that heal it. Can anyone advise me? It's making him a much less useful character and is harming my whole game. Thanks in advance!

PS sorry if this is a repeat post, 've been searching and can't find any info on this in the forum.