“Clear Image Cache” works for me, but the problem is widget. I had widget with 8 pics on every page, so it creates over 5k records in an hour , so creal cache is not reliable in this situation.
I have the same issue. I get up to 20k new records daily in options table also table is not optimized, for queries like WHERE autoload = ‘yes’ no index on autoload column so with 50k records options table is huge performance hit.