I used to have some of
these 3157 bulbs for front turn signals. They look pretty neat, and didn't have any hyper-blink issues since it's still a regular bulb. I know the link isnt to 3157, but I know they exist somewhere.
The far corner 194 bulb was LED with no issues though. I don't remember if that one blinked or not. I think it was more of a corner marker that stayed constant.