Apparently Automatic1111 VAE Decode is still faster than Forge.

[AndreyRGW]

Apparently A1111 VAE Decode is still faster than Forge (at least on sdxl models). On the same settings, on the same model, A1111 generates 2-3 seconds faster than Forge. The only difference is that I have FP8 cache enabled in A1111.

[Gourieff]

What GPU do you use?
With Forge we have a huge speed boost up to 2-3 times faster than in A1111
In my case it takes ~2 sec to generate 768x960 with LCM SD15 models (~7 it/s, RTX4060Ti 16Gb)

[AndreyRGW]

What GPU do you use? With Forge we have a huge speed boost up to 2-3 times faster than in A1111 In my case it takes ~2 sec to generate 768x960 with LCM SD15 models (~7 it/s, RTX4060Ti 16Gb)

I'm using RTX 2060 12GB.

In my case Forge generates images with SDXL models 2-3 seconds longer, e.g. where A1111 generates in 10.3 seconds, Forge generates in 12.6.
I decided to try SD15 LCM model and the situation was the same: I used 768x960 resolution like you and A1111 handled it in 3.3 seconds and Forge in 5.9 seconds.