How do I prevent 8-Direction movement from becoming jittery?

Sorry, a bit of a repost of another topic that I didn't get any good answers on, so I thought I'd word it more clearly:

I'm using the 8-Direction behavior in a pixelated game. Due to the fact that the 8-Direction behavior utilizes decimals, movement (specifically diagonal movement) becomes very jittery with the pixel rounding option turned on.

I cannot use anything besides the 8-Direction behavior due to its support for the Solid behavior in terms of collision.

TL;DR: 8-Direction is jittery when pixel rounding is on, how do I fix? I won't be using any alternative to 8-Direction because it has good collision support.

I guess the only option is to disable pixel rounding. You can clamp character position to the nearest integer pixels when it stops.

This causes collision to bug out.